Recent changes index — full log below

  • 2026-05-29 create | Mimi AI — Pitch + Prototype Proposal (grilled vision session, finalized decisions)
  • 2026-05-16 create | R Crash Course — C++ to R Translation
  • 2026-05-15 create | FAC1003 Programming Revision Questions + Answer Scheme
  • 2026-05-14 create | FAD1014 Hard Simulation — Leak-Focused + Solution Guide
  • 2026-05-14 inbox-process | FAD1018 & FAD1015 Exam Leaks
  • 2026-05-13 ingest | FAD1018 Comprehensive Drill, Kinetic Chemistry, SSH Setup
  • 2026-05-12 ingest | FAC1004 Exam Leaks
  • 2026-05-13 combine | FAC1003 Exam Leaks merged
  • 2026-05-11 create | FAD1014 Practice, FAD1018 Acid-Base, Solubility, Comprehensive Drill
  • 2026-05-12 create | FAD1018 Deviations, Thermochemistry, Phase Equilibria, Chemical Kinetics

title: Wiki Log date: 2026-05-10 tags:

  • meta/log

Wiki Log

[2026-05-24] create | FAC1004 & FAD1014 Tonight Full Drills + Solutions Only

Created | FAC1004 Tonight Full Drill (updated)

  • File: wiki/synthesis/FAC1004/FAC1004 Tonight Full Drill.md
  • Changes: Added multiple angles & reverse expansion (De Moivre), tangent shortcut via compound angle, non-homogeneous DE ratio test + substitution questions, Bernoulli coefficient-normalization step, Final Stretch 2.0 alignment
  • Structure: 5 sections, ~58 questions with full solutions interleaved

Created | FAD1014 Tonight Full Drill (new)

  • File: wiki/synthesis/FAD1014/FAD1014 Tonight Full Drill.md
  • Scope: Based on leak focus (Maclaurin, Ellipse, DEs) + official scope (Part A all-compulsory, Part B choose 4 of 6)
  • Structure: 5 sections, ~55 questions with full solutions interleaved
  • Appendix: NOT TESTED skip list + exam strategy

Created | Solutions Only companion files

  • wiki/synthesis/FAC1004/FAC1004 Tonight Full Drill — Solutions Only.md
  • wiki/synthesis/FAD1014/FAD1014 Tonight Full Drill — Solutions Only.md
  • Purpose: attempt questions first without accidental spoilers

Created | Must-Memorize Cheat Sheet (FAC1004 + FAD1014)

  • File: wiki/concepts/FAC1004 + FAD1014 — Must-Memorize Cheat Sheet.md
  • Covers: Complex loci/De Moivre, Bernoulli steps, non-homogeneous DE ratio test, exact/mixing tank, inverse hyperbolic derivatives+integrals, 8 Maclaurin series, integration forms/parts/trig-sub, series tests/summation/differences/binomial, conics (parabola/ellipse/hyperbola foci/vertices/asymptotes), parametric, FAD1014 skip list + exam strategy

[2026-05-16] create | FAD1018 Kinetic Chemistry — Part B Prediction & Breakdown

Created | Predicted Question Structure for B7

[2026-05-16] create | R Crash Course — C++ to R Translation

Created | Dense C++-to-R Translation Reference

  • Created: R Crash Course — C++ to R Translation in wiki/synthesis/FAD1015/
  • Method: grill-me skill — user specified exam survival scope (full FAD1015 R content), C++ proficiency assumed, no layman explanations
  • Format: 8-part reference + exam output prediction patterns + one-liner quick reference + exam day checklist
  • Contents:
    • Part 1: Mental Model Shift — 1-based indexing, everything is a vector, <- vs =, recycling rule, vectorized operations
    • Part 2: Vectors & Sequences — c(), :, seq(), rep(), subsetting [], logical subsetting
    • Part 3: Descriptive Statistics — mean(), var(), sd(), summary(), sort(), random number generation
    • Part 4: Matrices ⭐⭐⭐⭐ — matrix(), rbind(), cbind(), %*% vs * trap, t(), det(), solve(), Cramer's rule, drop = FALSE, naming
    • Part 5: Hypothesis Testing ⭐⭐⭐ — t.test(), z.test(), output field meanings, one-tailed tests, p-value decision rule, shapiro.test(), CI duality
    • Part 6: Probability Distributions — d/p/q/r convention, distribution table for binomial, Poisson, normal, uniform, exponential, t, F
    • Part 7: Data Input — read.table(), subset(), built-in datasets
    • Part 8: Exam Output Prediction — 4 template patterns for matrix creation, %*% vs *, t.test output, shapiro.test
    • Quick Reference — C++-to-R one-liner table (20+ mappings)
    • Exam Day Checklist — 10 critical points
  • Every section includes: C++ equivalent, the R trap, exam tip. No hand-holding.

Updated

  • Index: Added Crash Course subsection under FAD1015 synthesis (105 synthesis total, 403 total files)
  • Wiki health: 403 total files, 105 synthesis (+1)

[2026-05-15] create | FAC1003 Programming Revision Questions + Answer Scheme

Created | 6 C++ Revision Questions (Functions, Recursion, Pointers)

  • Source: inbox/Programming!.md — C++ revision slides (bookstore discount, factorial recursion, student scores with 2D pointers)
  • Created: FAC1003 — Programming Revision Questions (Functions, Recursion, Pointers) in wiki/synthesis/FAC1003/
  • Process: Used grill-me skill to determine exact requirements (Q1 C++, Q2 all topics, Q3 medium-to-hard, Q4 2 of each = 6 questions, Q5 any context, Q6 follow source template, Q7 synthesis/FAC1003)
  • 6 questions across 3 sections:
    • Section A — Modular Functions:
      • Q1 (Medium): Electricity Bill Calculator — tiered rates (3 tiers), fixed charge, 5% surcharge for usage > 600 kWh, double calculateCharge(double), double calculateSurcharge(double, double), void displayBill(...)
      • Q2 (Hard): Loan Repayment Calculator — loan validation (RM1k-50k), tiered interest rate (4.5% / 3.9%), tenure validation with retry loop, double getInterestRate(double), double calculateMonthlyPayment(...), void displayLoanSummary(...)
    • Section B — Recursion:
      • Q3 (Medium): Digit Sum & Digital Root — int sumOfDigits(int) recursive, int digitalRoot(int) recursive, step-by-step digit breakdown display
      • Q4 (Hard): Recursive Prime Factorisation — bool isPrime(int, int) recursive with sqrt optimisation, void factorise(int, bool) recursive, prime detection display
    • Section C — Pointers & Dynamic 2D Arrays:
      • Q5 (Medium): Temperature Anomaly Tracker — double** dynamic 2D, pointer-only access *(*(arr+i)+j), per-station mean/max/min/range, 5-tier classification (Extreme Warming through Extreme Cooling)
      • Q6 (Hard): Sparse Matrix Compression — dynamic 2D input, int* values/rowIndices/colIndices, pass-by-reference for compress function, full reconstruction round-trip verification
  • Format: Each question follows source template (narrative scenario → sub-function signatures → input/output spec → example output)

Created | Full Answer Scheme

Updated

  • Index: Added Revision Questions (1) and Answer Schemes (1) subsections under FAC1003 synthesis; bumped counts (102 → 104 synthesis, 400 → 402 total files)
  • Wiki health: 400 → 402 total files

[2026-05-10] create | FAD1015 Part G-H Reader's Note

Created | Conceptual Reading Note — Sampling, Estimation & Hypothesis Testing

[2026-05-09] update | FAC1003 leaks: fixed && error + added to synthesis summaries

Correction | && → & for call-by-reference

  • Source file: FAC1003 Exam Leaks 2025-2026 — Fixed Key Distinction callout describing && as call-by-reference. In C++, && is an rvalue reference (C++11 move semantics). The correct syntax for reference parameters is single & (void swap(int &x, int &y)).
  • Minimal file: FAC1003 Exam Leaks 2025-2026 — MINIMAL — Fixed * & vs && reference in What's Coming Out section
  • Log.md: Fixed log entry [2026-05-08] ingest which originally recorded "Call by reference uses &&"
  • The leak's own code examples already correctly used single & — only the descriptive text was wrong

Added | FAC1003 to Exam Leaks Synthesis Pages

  • Exam Leaks 2025-2026 — As Far as We Know — Added FAC1003 section:
    • Priority topics table with descriptions
    • Exam specifics (80 marks, Part A 24 + Part B 56)
    • NOT Coming Out list (searching/sorting, arrays/strings extensively)
    • Caveat: no lecture source pages exist to cross-verify
    • Lecture mapping table (all topics → L19-L32 range, not yet ingested)
    • Related section: added FAC1003 leak link
  • Exam Leaks 2025-2026 — Topic-to-Lecture Map with Predicted Question Types — Added FAC1003 section:
    • Verification Status warning (no lecture pages exist)
    • Detailed subsections: Pointers & References, Functions, Recursion vs Iteration, Scope, Dynamic Memory
    • TRUE/FALSE sample answers table
    • NOT Coming Out list
    • Sources list: added FAC1003 leak
    • Study plan: added Phase 5 for Programming
    • Related section: added FAC1003 leak link

Updated

  • Index: Updated FAC1003 synthesis section with Exam Leaks entries; updated health tip (381 files)
  • Wiki health: 381 total files (edits only, no new files created)
  • No new files: All changes were in-place edits to existing files

[2026-05-08] ingest | FAC1003 Programming Exam Leaks 2025-2026

Ingest | Programming Exam Leaks — 24 Images + WhatsApp Messages

  • Source: LEAKS PROGRAMMING!!!! from adiancraft.md + 24 JPG images from inbox/ (slides from revision session)
  • Leak provider: Adian Sani (adiancraft) — lecture slides captured during FAC1003 revision
  • Created source: FAC1003 Exam Leaks 2025-2026 in wiki/sources/exam-leaks/

Key Intel Transcribed

  • Scope: 1D and 2D arrays ONLY — searching/sorting NOT coming out
  • Part A (24 marks): Conceptual — T/F, fill blanks, identify errors
  • Part B (56 marks): Write full C++ code — 4 questions at 14 marks each

Priority Topics (Highest → Lowest)

  1. Pointers & References — VERY VERY IMPORTANT

    • Pointer uses * and & symbols
    • Call by reference uses & (single ampersand in parameter)
    • Both Part A and Part B will use pointer-by-reference
    • Example: swap function with void swap(int &x, int &y)

  2. Functions — DEFINITELY COMING OUT

    • Void vs Non-Void distinction crucial
    • Function prototypes very important (just declare, no formula yet)
    • Must recognize pointer vs reference code patterns

  3. Recursion vs Iteration — MUST DIFFERENTIATE

    • Most likely: use BOTH in same question
    • Factorial and Fibonacci DEFINITELY coming out
    • Factorial AND sum of factorial may come out
    • Include non-void functions for calculations

  4. Scope of Variables

    • Local (block only), Global (whole program), Static (retains value)

  5. Dynamic Memory Allocation

    • Uses new keyword for arrays

Code Examples Transcribed

  • Factorial recursive and iterative implementations
  • Complete program with calculateFactorial() (non-void) + displayResult() (void)
  • Function prototype/call/definition fill-in-the-blank templates
  • TRUE/FALSE questions with answers and explanations

Lecture Coverage

  • L19–L32: Mostly covered in Part B (coding questions)

Topics NOT Coming Out

  • ❌ Searching and sorting algorithms
  • ❌ Arrays (extensively)
  • ❌ Strings (extensively)

Updated

  • Index: Added FAC1003 leaks to Exam Leaks section (5 → 6 files)
  • Wiki health: 375 → 376 total files
  • Inbox: All 25 files processed (24 images + 1 MD)

Created | Minimal Quick-Scan Version

  • Created: FAC1003 Exam Leaks 2025-2026 — MINIMAL — Condensed rapid-reference version
  • Contains: Format table, DEFINITELY/MAYBE/NOT lists, memorizable code blocks, T/F answers, scope table
  • Purpose: Pre-exam quick scan (2 minutes)
  • Wiki health: 376 → 377 total files

[2026-05-08] create | FAD1015 Distribution Reading Note

Created | Conceptual Reading Note — Poisson, Normal, Uniform, Exponential

[2026-05-08] create | FAD1015 Comprehensive Drill — Full Syllabus

Created | Full Syllabus Rapid-Fire Drill (62 Problems)

  • Created: FAD1015 Comprehensive Drill — Full Syllabus in wiki/synthesis/final-exam-prep/FAD1015/
  • Drill structure:
    • Part A: Probability & Counting (8 problems) — formula ID, calculations, conditional, Bayes
    • Part B: Binomial Distribution (6 problems) — LEAK Q1: characteristics, formula, table, p>0.5 flip
    • Part C: Poisson & Uniform (8 problems) — LEAK Q2: Poisson calc, binomial→Poisson, uniform
    • Part D: Normal Distribution (6 problems) — LEAK Q4: standard normal, percentiles, continuity correction
    • Part E: Random Variables (8 problems) — LEAK Q3/Q4: discrete/continuous PDF, CDF, mean, variance, constants
    • Part F: Exponential Distribution (4 problems) — exponential calc, memoryless property
    • Part G: Sampling & Estimation (6 problems) — CLT, CI, sample size
    • Part H: Hypothesis Testing (8 problems) — LEAK Q5: test selection, full tests, R output interpretation
    • Part I: Matrices & R (8 problems) — LEAK Q6 HIGHEST PRIORITY: by-hand ops, R code, predict output
  • Includes: Cheat sheet, scorecard with part-by-part diagnosis table, error log template, full answer key
  • Estimated time: 2–3 hours
  • Proficiency: 70%/85%/93%
  • Wiki health: 373 → 374 total files

[2026-05-08] create | FAD1022 Rapid-Fire Drill — Transistors & Op-Amps

Created | Rapid-Fire Drill Pack — Transistors & Op-Amps (48 Problems)

  • Created: FAD1022 Rapid-Fire Drill — Transistors & Op-Amps in wiki/synthesis/final-exam-prep/FAD1022/
  • Drill structure:
    • Part A: BJT Current Relationships (6 problems) — $I_E = I_B + I_C$, $\beta$ calculations
    • Part B: Fixed-Bias DC Analysis (6 problems) — $I_B$, $I_C$, $V_{CE}$, $I_{C(sat)}$
    • Part C: Emitter-Stabilized Bias (6 problems) — stability factor, $R_E$ effects
    • Part D: Voltage Divider Bias (6 problems) — approximate analysis, condition checking
    • Part E: Op-Amp Inverting (6 problems) — $V_{out} = -(R_f/R_1)V_{in}$
    • Part F: Op-Amp Non-Inverting (6 problems) — $V_{out} = (1 + R_f/R_1)V_{in}$
    • Part G: Circuit Identification & Mixed (6 problems) — identify then calculate
    • Part H: Exam Traps & Reverse Problems (6 problems) — common mistakes, sign errors, hidden conditions
  • Includes: Cheat sheet, score tracking, error log template, full answer key
  • Target: 90 seconds per problem, proficiency at 71%/85%/94%
  • Sources: FAD1022 L34-L38 — Semiconductors & Op-Amps, FAD1022 Tutorial 12 — Semiconductors and Electronics, FAD1022 Tutorial 13 — Electronics and Atomic Physics
  • Wiki health: 372 → 373 total files

[2026-05-07] create | FAD1022 CQ — Atomic & Nuclear Physics Quiz Set

Created | Course Quiz — Atomic & Nuclear Physics (8 Problems)

  • Created: FAD1022 CQ — Atomic & Nuclear Physics Quiz Set in wiki/sources/
  • Questions transcribed:
    • Q1: Hydrogen transition to ground state ($n_i = 4$) — using $E_n = -13.6/n^2$
    • Q2: Beta decay energy (Th-234) — $Q = 0.745$ MeV
    • Q3: C-14 dating (25% remaining) — $t = 11,460$ years (2 half-lives)
    • Q4: Binding energy (He-4) — $E_B = 27.4$ MeV
    • Q5: C-14 dating (75% remaining) — $t = 2,378$ years
    • Q6: Beta decay energy (C-14) — $Q = 0.156$ MeV
    • Q7: Hydrogen transition (n=4 → n=1) — $\Delta E = 12.75$ eV
    • Q8: Binding energy (Li-7) — $E_B = 37.91$ MeV
  • Key concepts: Hydrogen energy levels, radioactive decay, half-life calculations, beta decay Q-values, nuclear binding energy, mass defect
  • Format: Quick answer key, detailed solutions, summary table, key formulas, constants table
  • Updated entity: FAD1022 - Basic Physics II — added CQ link under Lecture Modules
  • Updated index: Physics course quizzes: 4 → 5
  • Wiki health: 371 → 372 total files

[2026-05-07] update | FAD1022 CQ — Capacitors & DC Circuits Quiz Set (Extended to 8 Problems)

Extended | Course Quiz — Capacitors & DC Circuits (4 Additional Problems)

  • Updated: FAD1022 CQ — Capacitors & DC Circuits Quiz Set — Added 4 new questions from photographed quiz images
  • New questions transcribed:
    • Q5: RC discharge — charge from current decay data ($Q \approx 0.18$ mC at 33 ms) — key insight: current and charge share identical time constant; exponential decay by factor of 3 every 11 ms
    • Q6: Capacitor energy from geometry ($U = 8.4 \times 10^{-6}$ J) — calculating C from plate area/separation, then energy
    • Q7: EMF with internal resistance — alternate values ($\varepsilon = 12.10$ V) — same trap as Q3
    • Q8: Voltage divider design — alternate values ($R_2 = 38$ Ω) — same trap as Q4, output across lower resistor since $V_{out} < V_{in}/2$
  • Updated content:
    • Extended summary table (now 8 questions total)
    • Added quick answer key for new questions
    • Updated info box with expanded topic list
  • Wiki health: 371 total files (updated content, no new files)

[2026-05-07] create | FAD1022 CQ — Capacitors & DC Circuits Quiz Set

Created | Course Quiz — Capacitors & DC Circuits (4 Problems)

  • Created: FAD1022 CQ — Capacitors & DC Circuits Quiz Set in wiki/sources/
  • Questions transcribed:
    • Q1: RC circuit discharge time ($t = 20$ ms) — trap: confusing charge/discharge curves; recognizing that current and voltage share the same exponential decay
    • Q2: Capacitor energy with halved plate separation ($U = 90.0$ mJ) — trap: constant voltage vs constant charge scenarios; battery connected means V constant, C doubles, energy doubles
    • Q3: EMF with internal resistance ($\varepsilon = 9.20$ V) — trap: ignoring internal resistance voltage drop; $\varepsilon = V_{terminal} + Ir$
    • Q4: Voltage divider design ($R_2 = 30$ Ω) — trap: not recognizing output is taken across upper resistor when $V_{out} > V_{in}/2$
  • Key concepts: RC time constant, exponential decay, capacitor energy formulas, EMF-terminal voltage relationship, voltage divider configurations
  • Format: Quick answer key, detailed solutions with trap callouts, summary table, key formulas, related links
  • Updated entity: FAD1022 - Basic Physics II — added CQ link under Lecture Modules
  • Wiki health: 370 → 371 total files

[2026-05-07] update | FAD1022 CQ — Electrostatics Quiz Set (Extended to 8 Problems)

Extended | Course Quiz — Electrostatics (4 Additional Problems)

  • Updated: FAD1022 CQ — Electrostatics Quiz Set — Added 4 new questions from photographed quiz images
  • New questions transcribed:
    • Q5: Proton travel time in parallel plates — alternate version ($t = 5.84 \times 10^{-9}$ s) — same trap as Q2
    • Q6: Electron acceleration in E-field — alternate version ($a = 6.33 \times 10^{14}$ m/s²) — same trap as Q4
    • Q7: Potential difference from work ($\Delta V = 0.1$ V) — inverse of Q1, straightforward $\Delta V = W/q$
    • Q8: PE change in uniform E-field ($\Delta U = 1.9 \times 10^{-16}$ J) — trap: field direction vs motion direction; proton moves against field → gains PE
  • Updated content:
    • Extended summary table (now 8 questions total)
    • Added new key formulas for uniform field potential: $\Delta V = Ed$
    • Updated quick answer key with new questions
    • Added field-direction relationship notes
  • Concept links: Electric Potential Energy, Uniform Electric Field
  • Updated entity: FAD1022 - Basic Physics II — updated CQ description (4 → 8 problems)
  • Wiki health: 370 total files (updated content, no new files)

[2026-05-07] create | FAD1022 CQ — Electrostatics Quiz Set (Original 4 Problems)

Created | Course Quiz — Electrostatics (4 Problems)

  • Created: FAD1022 CQ — Electrostatics Quiz Set in wiki/sources/
  • Questions transcribed:
    • Q1: Work done transferring charge ($W = 2.4 \times 10^{3}$ J) — straightforward $W = qV$ calculation
    • Q2: Proton travel time in parallel plates ($t = 5.84 \times 10^{-9}$ s) — trap: using vertical separation instead of horizontal distance; electric field affects vertical motion, not horizontal travel time
    • Q3: Electric potential at midpoint ($V = +1.8 \times 10^{6}$ V) — trap: calculating E-field (vector) instead of potential (scalar), or using full separation instead of half-distance
    • Q4: Electron acceleration in E-field ($a = 6.33 \times 10^{14}$ m/s²) — trap: using proton mass instead of electron mass
  • Format: Quick answer key table, detailed solutions with trap callouts, key formulas section, related wikilinks
  • Concept links: Electrostatics, Electric Potential, Coulomb's Law, Electron, Parallel Plate Capacitor
  • Updated index: Physics sources: 21 → 22 files, Course Quizzes: 2 → 3
  • Updated entity: FAD1022 - Basic Physics II — added CQ link to Lecture Modules
  • Wiki health: 369 → 370 total files

[2026-05-07] create | FAD1014 Simulation Paper — UAS 2025-2026

Created | Full Exam Simulation Paper

  • Created: FAD1014 Simulation Paper — UAS 2025-2026 in wiki/synthesis/FAD1014/
  • Exam structure: 2 hours, 80 marks total
    • Part A (24 marks): 2 compulsory questions covering integration (antiderivative, substitution, definite integrals), area under curve, series convergence, method of differences, separable DEs, parabola geometry
    • Part B (56 marks): Choose 4 of 6 — topics include integration by parts, trigonometric substitution, Maclaurin series, homogeneous DEs, parametric equations, hyperbola + binomial series
  • Design basis: Lecturer exam scope (FAD1014 Exam Scope 2025-2026 — Lecturer Slides) with confirmed Part A/Part B topic distribution
  • Excluded topics: Circle geometry, partial fractions, powers of trig, volumes of revolution, area between curves, Binomial II, Taylor series, linear DEs
  • Includes: Formula sheet (standard integrals, series, conic section properties), full answer key, wikilinks to related resources
  • Updated index: FAD1014 synthesis: 84 → 85 files (+1 simulation paper)
  • Wiki health: 368 → 369 total files

[2026-05-07] ingest | FAC1004 Tutorial 14 — Mixing Tank Differential Equations

Ingest | Tutorial 14 — Mathematics Tutorial (2 Pages)

Problem 1: Cylindrical Tank with Brine Solution

  • Part (a): Differential equation $\displaystyle \frac{dQ}{dt} = -\frac{Q(t)}{50}$, solution $\displaystyle Q(t) = 90e^{-t/50}$
  • Part (b): Amount after 25 seconds: $Q(25) \approx 54.59\ \text{g}$
  • Part (c): Time to reduce to 35 g: $t \approx 47.2\ \text{seconds}$

Problem 2: Chlorinated Container

  • Part (a): Differential equation $\displaystyle \frac{dC}{dt} = 160 - \frac{4}{75}C(t)$, solution $\displaystyle C(t) = 3000 - 2985e^{-4t/75}$
  • Part (b): Amount after 60 seconds (1 minute): $\approx 169.92\ \text{units}$

Problem 3: Sugar Bowl with Inflow/Outflow

  • Differential equation: $\displaystyle \frac{dS}{dt} = 15 - \frac{2S(t)}{120 + t}$
  • Solution: $\displaystyle S(t) = 5(120 + t) - \frac{72000}{(120 + t)^2}$
  • Amount after 2 minutes: $1198.75\ \text{g}$
  • Amount when bowl overflows: $1999.55\ \text{g}$

Problem 4: Variations on Problem 3

  • Part (a): Outflow $1\ \text{m}^3/\text{second}$, amount after 2 minutes: $\approx 3250.8\ \text{g}$
  • Part (b): Outflow $6\ \text{m}^3/\text{second}$, amount after 20 seconds: $298.75\ \text{g}$
  • Amount when tank overflows (Part a): $\approx 3668.3\ \text{g}$
  • Amount when tank empties (Part b): $0\ \text{g}$

Problem 5: Mercury-194 Decay

  • Part (a): Solution $\displaystyle P(t) = P_0 e^{-0.728t}$
  • Part (b): Amount after 50 minutes: $\approx 9.62 \times 10^{-14}\ \text{g}$ (essentially decayed)
  • Part (c): Half-life: $\approx 0.952\ \text{hours}$ ($57.1\ \text{minutes}$)

Problem 6: Plutonium-241 Decay

  • Part (a): Solution $\displaystyle P(t) = 400e^{-0.08125t}$ (with $k = 0.08125$)
  • Part (b): Amount after 6 years: $\approx 245.68\ \text{mg}$
  • Part (c): Half-life: $\approx 8.53\ \text{years}$

Created Entity

  • FAC1004 Advanced Mathematics II — Course entity page with:
    • Course overview (PASUM, University of Malaya)
    • Content areas (Complex Numbers, Inverse Trig Functions, Hyperbolic Functions)
    • All lecture and tutorial links
    • Exam focus and related courses

Updates Made

  • Updated entity: FAC1004 - Advanced Mathematics II (Computing) — added tutorial link
  • Updated index:
    • FAC1004 tutorials count: 7 → 8
    • FAC1004 synthesis section: added Tutorial 14 reference
    • Wiki health: 355 → 356 total files (+1 tutorial, entity count unchanged - entity already existed)
  • Archived: PDF moved to raw/tutorials/

Topics Covered

  • Mixing tank differential equations (inflow/outflow problems)
  • Exponential decay models (Mercury-194, Plutonium-241)
  • Half-life calculations
  • Rate equations with varying volume
  • Integrating factor method for linear ODEs
  • Separation of variables for exponential decay

Related Concepts

[2026-05-06] ingest | Exam Leaks 2025-2026 — 4 Courses

Ingest | WhatsApp Leak Images → exam-leaks/ Subfolder

  • Processed: 4 JPG images from inbox/ — handwritten and typed exam focus tips for 2025-2026 finals
  • Created subfolder: wiki/sources/exam-leaks/ — dedicated location for lecturer-shared exam focus materials (distinct from past-year UAS papers)

Created Sources

FAD1022 Exam Leaks 2025-2026 — Sir Hafizul's handwritten focus topics:

  • Section A: Kirchhoff's law conditions
  • Section B (focus on B2,B3,B4): Gauss law sphere, capacitor+dielectric+voltage divider, AC phasor diagrams+RLC+resonance
  • Section C (focus on C3,C4,C5,C6): Self inductance+transformers, semiconductors+biasing+clippers, atomic physics (Bohr radius), photoelectric effect
  • Priority table with "sng" (senang) markers

FAD1015 Exam Leaks 2025-2026 — Maths 3 confirmed topics:

  • Part A: Binomial distribution (definition, characteristic, type, parameters), Uniform distribution, Poisson
  • Part B: CDF, mean/SD, hypothesis testing (critical value, p-value, confidence interval), Matrices in R (highest priority)
  • General tips: Normal distribution (ignore irrelevant info), matrices are easy

FAD1014 Exam Leaks 2025-2026 — Maths 2 focus:

  • Differential equations: homogeneous, inseparable, linear
  • Maclaurin series, parabola
  • Integration by parts and substitution
  • Lecturer note: "easier than past year papers"

FAD1018 Exam Leaks 2025-2026 — Chemistry tip:

  • Brady's reagent only for ammonia derivatives

Moved Existing Physics Leak

  • Moved: FAD1022 Exam Tips — WhatsApp Voice Notes.md → wiki/sources/exam-leaks/
  • This was previously in wiki/sources/ root — now properly organized in exam-leaks subfolder

Updated Entities

Source Tags Used

  • source/exam-leak — for lecturer-shared focus topics (distinct from source/final-exam for past papers)
  • year/2025-2026 — current academic year

Created Synthesis Pages

Exam Leaks 2025-2026 — As Far as We Know (light) —

  • First pages: rundown of what questions are coming out per course/section
  • Next pages: what to focus on — lecture mapping with lecture wikilinks
  • Designed for quick exam-day scanning

Exam Leaks 2025-2026 — Topic-to-Lecture Map with Predicted Question Types (medium-heavy) —

  • Known questions from leaks with exact lecture worked examples that map to each
  • Predicted question templates with specific formulas, constants, and solution steps
  • FAD1022: Every B and C question mapped to lecture examples (B2 → L7-L9 Ex 2 & L13 Prob 13.1, B3 → L16 phase table, C3 → L31 Ex 3, C4 → L36 worked ex, C5 → L39 full derivation)
  • FAD1015: Full 6-step hypothesis testing with 3 worked lecture examples, R matrix operations table
  • FAD1014: Homogeneous = non-homogeneous DE linearly independent; Inseparable = linearly dependent; Linear = integrating factor
  • Gaps section: notes what wasn't read (Tuto 13 Q1 exact, magnet Tuto 8-11)

Inbox Status

  • Archived: All 6 files moved to raw/leaks-2025-2026/
  • Status: INBOX EMPTY ✅

[2026-05-05] ingest | FAD1022 CQ4 — Magnetism Quiz Set (8 Problems Total)

Ingest | Course Quiz — Magnetism (First 4 Problems)

  • Source: Quiz problems from CQ4 course assessment (photographed)
  • Created: FAD1022 CQ4 — Magnetism Quiz Set — Complete source page with:
    • Question 1: Resultant B-field at midpoint ($B_{net} = 2.00 \times 10^{-5}$ T) — fields oppose → subtract
    • Question 2: Lorentz force on electron ($F = 3.33 \times 10^{-17}$ N, -x-axis) — electron = negative charge → LHR
    • Question 3: Force on U-shaped coil ($I_1 = 1.54$ A) — only vertical sides matter
    • Question 4: Torque ($\tau = 0.033$ N m) — trap: θ = 90° - 65° = 25° (plane angle given)

Update | CQ4 Magnetism (Additional 8 Problems)

  • Questions 5-8: First extension with advanced traps:
    • Q5: B-field above wire ($B_{net} = 2.40 \times 10^{-5}$ T) — fields add (opposite of Q1, same side)
    • Q6: Lorentz force on proton ($F = 4.07 \times 10^{-17}$ N, -x-axis) — proton = positive → RHR (opposite of Q2)
    • Q7: Force on wire in triangle ($F/L = 7.6 \times 10^{-5}$ N/m) — vector addition of perpendicular forces
    • Q8: Torque ($\tau = 0.085$ N m) — angle with normal → use directly (opposite trap from Q4)
  • Questions 9-12: Second extension (variations):
    • Q9: Two wires midpoint ($B_{net} = 3.20 \times 10^{-5}$ T) — same trap as Q1
    • Q10: Electron in B-field ($F = 1.93 \times 10^{-17}$ N, -x-axis) — same trap as Q2
    • Q11: U-coil force ($I_1 = 1.81$ A) — same trap as Q3
    • Q12: Torque ($\tau = 0.145$ N m) — same trap as Q4
  • Trap summaries: Added comparison tables showing when to add vs subtract, RHR vs LHR, plane angle vs normal angle
  • Wiki health: 349 → 350 total files (12 problems in 1 source)

[2026-05-05] ingest | FAD1022 CQ — AC Circuits Quiz Set

Ingest | Course Quiz — AC Circuits (11 Problems Total)

  • Source: Quiz problems from course assessment (photographed in 3 batches)
  • Created: FAD1022 CQ — AC Circuits Quiz Set — Complete source page with:
    • Questions 1-4: Original set (inductive reactance, RLC capacitor voltage, RL inductance/current)
    • Question 5: RMS from AC equation $V(t) = 8\sin(120\pi t + \pi/6)$ ($V_{rms} = 5.66$ V)
    • Questions 6-8: Second batch (inductive RLC $V_L$, RC capacitance, RL current)
    • Questions 9-11: Third batch (inductive RLC $V_L$ variation, RC capacitance variation, RL current variation)
    • Important note: Added clarification on using positive square root when solving for reactance in RLC circuits
    • Summary table: All 11 solutions with key formulas
    • Quick answer key: Reference table at top for rapid lookup
    • Concept links: AC Circuits, RLC Series Circuit, RL Series Circuit, RC Series Circuit, RMS Values, Inductive Reactance, Capacitive Reactance
  • Updated concept: AC Circuits — Added important note about using positive square root for reactance calculations
  • Updated: FAD1022 - Basic Physics II — added CQ source link
  • Wiki health: 346 → 347 total files (+1 source)

[2026-05-05] process | Electrochemistry Part 3 — Image Conversion & Inbox Archive

Image Conversion | EC2526 Electrolytic Cell

  • Source: L4 L5 EC2526 V2- Stdn copy.pdf from inbox (50 pages, scanned)
  • Converted: 50 PNG images to wiki/assets/ec2526/ec_l4l5-*.png
  • Content: FAD1018 Electrochemistry Part 3 — Electrolytic Cell by Dr. Mahfuzah Yusoff
  • Topics covered:
    • Electrolytic cell components and operation
    • Selective discharge of ions (3 factors: E° values, concentration, electrode type)
    • Electrochemical series for cations and anions
    • Overpotential/overvoltage effect in dilute NaCl
    • Industrial applications: Downs Cell (molten NaCl), Hall Process (aluminium extraction)
    • Electrolysis of CuSO₄ with copper electrodes (active vs inert)
  • Existing source: FAD1018 L4-L5 — Electrolytic Cell — already transcribed

Archive | UAS Final Exam Papers

  • Moved 3 UAS PDFs from inbox to archive:
    • UAS 22-23 FAD1022 Basic Physic II.pdf → pdf/archive/
    • UAS 23-24 FAD1022 Basic Physics II.pdf → pdf/archive/
    • UAS 24-25 FAD1022 Basic Physics II.pdf → pdf/archive/
  • Status: All UAS papers already processed and transcribed to wiki/sources/

File Move | EC2526 Lecture

  • Moved: L4 L5 EC2526 V2- Stdn copy.pdf → raw/lectures/
  • Inbox status: Cleared (4 files processed/archived)

[2026-05-05] update | Electrochemistry Concept Page → Evergreen + Mnemonics

  • Upgraded: Electrochemistry from status/seedling → status/evergreen
  • Added mnemonics: GAEP/ECPO, GAL-AN, electrochemical series, QuIM NoF, Negative Nancy Eats Fries, Nernst penny penalty
  • Added sections: Overpotential, Downs Cell, Hall Process, selective discharge factors, Faraday's unified formula with mnemonic, Nernst with concentration cell
  • Related: Now fully linked to all three lecture sources + tutorial

[2026-05-05] create | FAD1018 Electrochemistry — Reading Note

  • Created: wiki/synthesis/FAD1018/FAD1018 Electrochemistry — Reading Note.md
  • Purpose: Deep conceptual walkthrough connecting L1-L2, Part 2, and L4-L5 lectures
  • Content: Narrative explanations of reduction potential, driving force, Nernst, $\Delta G = -nFE$, selective discharge, overpotential, Faraday's laws, industrial applications
  • Features: Self-check questions, common exam traps table, unified concept framework, mnemonics throughout
  • Index update: Added reading notes subsection to FAD1018 synthesis (wiki health: 344 → 345)

[2026-05-05] create | FAD1018 Electrochemistry Rapid-Fire Drill Pack

  • Created: wiki/synthesis/FAD1018/FAD1018 Rapid-Fire Drill Pack — Electrochemistry.md
  • 48 problems across 6 parts: Cell potential (14), Cell notation (10), Nernst (10), Faraday's laws (11), Selective discharge (13), Thermodynamics (9)
  • Includes: Cheat sheet with mnemonics, full answer key, proficiency benchmarks (70/85/95%), speed targets, error log template
  • Index update: Added to FAD1018 drills (wiki health: 345 → 346)

[2026-05-04] ingest | FAD1022 UAS 2022-2023 — Complete Final Exam Transcription

Ingest | UAS 2022-2023 Final Exam Paper

  • Processed: 19 PNG images from /home/kuumin/docs/nothingburger/wiki/assets/uas/uas_22_23-*.png — Complete exam paper
  • Created source: FAD1022 UAS 2022-2023 — Full transcription with:
    • Exam metadata: 3 hours, 26 questions (15+5+6), 19 pages, June 2023
    • Constants table: 7 physical constants in MathJax format ($\varepsilon_0$, $\mu_0$, $m_e$, $e$, $h$, $k$)
    • Section A (15 questions): A1-A15 — ALL compulsory questions transcribed with MathJax equations
    • Section B (5 questions): B1-B5 — Answer 3 of 5 — Full question text, diagrams described
    • Section C (6 questions): C1-C6 — Answer 4 of 6 — Complete with circuit diagrams
    • Topic distribution analysis: Magnetism & EM Induction (~30%), AC Circuits (~25%), Electrostatics & DC (~25%), Modern & Semiconductor Physics (~20%)
    • All formulas in MathJax: Electric flux, capacitor energy, reactance, transformer equations, etc.
  • Topics covered:
    • Electrostatics: Electric flux, Coulomb's law, electric field and potential
    • Capacitors: Energy stored, parallel plate, combinations, dielectrics
    • DC Circuits: EMF/internal resistance, Kirchhoff's Laws, voltage divider
    • AC Circuits: Reactance calculations, phasor diagrams, impedance, power factor
    • Magnetism: Lorentz force, velocity selector, Ampere's Law
    • Induction: Faraday's Law, motional EMF, transformers, self-inductance
    • Semiconductors: Diode circuits, BJT transistor analysis
    • Modern Physics: Photoelectric effect, de Broglie wavelength
    • Nuclear Physics: Radioactive decay, half-life calculations
  • Updated entity: FAD1022 - Basic Physics II — added UAS 2022-2023 to Past Year Exams section
  • Updated index: Added to Physics sources section (20 files total)
  • Wiki health: 343 → 344 total files (+1 source)

[2026-05-04] ingest | FAD1022 UAS 2024-2025 — Complete Final Exam Transcription

Ingest | UAS 2024-2025 Final Exam Paper

  • Processed: 23 PNG images from /home/kuumin/docs/nothingburger/wiki/assets/uas/uas_24_25-*.png — Complete exam paper
  • Created source: FAD1022 UAS 2024-2025 — Full transcription with:
    • Exam metadata: 3 hours, 26 questions, 23 pages, May/June 2025
    • Constants table: All 11 physical constants in MathJax format
    • Formulas provided: Q=CV, capacitor combinations, E=mc², Heisenberg principle
    • Section A (15 questions): A1-A15 — ALL questions transcribed with MathJax equations
    • Section B (5 questions): B1-B5 — Answer 3 of 5 — Full question text, diagrams described
    • Section C (6 questions): C1-C6 — Answer 4 of 6 — Complete with circuit diagrams, data tables
    • Topic distribution analysis: AC circuits (~24 marks), Electrostatics (~20), Capacitors/DC (~20)
    • Study recommendations: High-yield topics identified
  • Topics covered:
    • Electrostatics: Coulomb's law, electric potential, field calculations
    • Capacitors: Parallel plate, series/parallel combinations, RC circuits
    • DC Circuits: Ohm's law, voltage divider, Wheatstone bridge
    • AC Circuits: Reactance, phasors, RLC series, resonance, power factor
    • Magnetism: Lorentz force, torque on loops, mass spectrometer
    • Induction: Faraday's law, motional EMF, transformers
    • Semiconductors: Diode characteristics, transistor biasing
    • Nuclear Physics: Alpha decay, binding energy calculations
    • Modern Physics: Photoelectric effect, Heisenberg uncertainty
  • Updated entity: FAD1022 - Basic Physics II — added UAS 2024-2025 to Past Year Exams section
  • Wiki health: 343 → 344 total files (+1 source)

[2026-05-04] ingest | FAD1022 UAS 2023-2024 — Complete Final Exam Transcription

Transcribed | FAD1022 UAS 2023-2024 Final Examination

  • Processed: 24 PNG images from /home/kuumin/docs/nothingburger/wiki/assets/uas/uas_23_24-*.png
  • Created source: FAD1022 UAS 2023-2024 — Complete transcription of 24-page final exam:
    • Section A (45 marks): 15 compulsory short-answer questions (3 marks each)
    • Section B (36 marks): 5 long-answer questions (answer any 3) — 12 marks each
    • Section C (48 marks): 6 long-answer questions (answer any 4) — 12 marks each
    • Total: 129 marks, 3 hours duration
  • Topic coverage: Electrostatics (A1-A3, B1, B2), DC Circuits (A4, B3), AC Circuits (A5-A6, B4-B5), Magnetism (A7-A8, C1), Electromagnetic Induction (A9-A11, C2-C3), Semiconductors & Electronics (A12-A13, C4), Atomic Physics (A14), Nuclear Physics (C5), Modern Physics/Wave-Particle Duality (A15, C6)
  • Constants provided: Planck's constant, speed of light, Coulomb constant, electron mass/charge, unit conversions (eV, atomic mass unit)
  • Notable features:
    • Wheatstone bridge derivation required (B3)
    • Ampere's law derivation for magnetic field inside wire (C1)
    • Photoelectric effect threshold wavelength calculation (A15)
    • Heisenberg uncertainty principle application (C6)
    • Transistor voltage divider bias analysis (C4)
  • Updated entity: FAD1022 - Basic Physics II — added UAS 2023-2024 to Past Year Exams section
  • Wiki health: 343 → 344 total files (+1 source)

[2026-05-04] ingest | FAD1022 L11-L12 — Kirchhoff's Rules (Theory + Applications)

Ingest | Lecture 11 — Kirchhoff's Rules (Theory)

  • Processed: 43 PNG images from /home/kuumin/docs/nothingburger/.temp_pdf_images/l11-*.png — Direct image rendering
  • Created source: FAD1022 L11 — Kirchhoff's Rules (Theory) — Complete lecture covering:
    • 11.1 Fundamentals of Electric Circuit — Standard symbols, series/parallel networks, voltage drop, power and energy
    • 11.2 Kirchhoff's Junction Rule (KCL) — Statement, physical basis (charge conservation), formula $\sum I_{\text{in}} = \sum I_{\text{out}}$
    • 11.3 Kirchhoff's Loop Rule (KVL) — Statement, physical basis (energy conservation), formula $\sum V = 0$
    • Sign conventions for EMFs and resistors
    • Worked examples: Problem #11.1 (series resistors), Problem #11.2 (parallel resistors), Problem #11.3 (combinations)

Ingest | Lecture 12 — Kirchhoff's Rules (Applications)

  • Processed: 25 PNG images from /home/kuumin/docs/nothingburger/.temp_pdf_images/l12-*.png — Direct image rendering
  • Created source: FAD1022 L12 — Kirchhoff's Rules (Applications) — Complete lecture covering:
    • 12.1 Problem Solving Strategy — 5-step systematic approach, sign conventions summary
    • 12.2 Worked Examples — Multi-loop circuit problems:
      • Problem #12.2: Multi-loop circuit with switch (two batteries, three resistors)
      • Problem #12.3: Complex 5-resistor circuit with two batteries
      • Problem #12.5: Multi-source circuit with internal resistances (homework)
    • Common mistakes to avoid

Concept Pages Created

Updates Made

  • Updated entity: FAD1022 - Basic Physics II — added L11 and L12 lecture links
  • Lecturer: Dr. Hashlina Rusdi — confirmed for DC circuits lectures (L10-L13)
  • Wiki health: 295 → 301 total files (+2 sources, +4 concepts)
  • Inbox status: 4 PDFs processed, inbox now empty

[2026-05-04] ingest | FAD1022 L10 — EMF and Internal Resistance

Ingest | Lecture 10 — Electromotive Force and Internal Resistance

  • Processed: 38 PNG images from l10-*.png — Direct image processing of complete lecture
  • Created source: FAD1022 L10 — EMF and Internal Resistance — Complete lecture summary covering:
    • 10.1 Electrical Conduction — Current definition $I = \Delta Q/\Delta t$, charge and electron calculations
    • 10.2 Electrical Conductivity and Resistivity — Resistivity formula $\rho = RA/l$, conductivity $\sigma = 1/\rho$, material properties table
    • 10.3 Ohm's Law — Ohmic vs non-ohmic conductors, $V = IR$, worked examples
    • 10.4 Electromotive Force (EMF) — Definition $\varepsilon = P/I$, EMF vs potential difference distinction
    • 10.5 Internal Resistance — Concept, circuit model, voltage drop $Ir$
    • 10.6 Source of EMF and Internal Resistance — Complete circuit equation $\varepsilon = IR + Ir$, three conditions (discharging/charging/open circuit)
    • 9 worked problems with full solutions (#10.1 through #10.9)
    • Mermaid concept map showing lecture structure
    • Key formulas summary table
  • Created concept: Electromotive Force (EMF) — Definition, sources (batteries, generators, solar cells, fuel cells), EMF vs potential difference distinction, formula relationships, worked examples
  • Created concept: Internal Resistance — Physical origin, circuit model, three operating conditions, power dissipation $P = I^2r$, measurement methods, typical values for different sources
  • Created concept: Terminal Voltage — Definition, relationship to EMF and internal resistance, three conditions with formulas, terminal voltage vs current graph, practical implications
  • Updated entity: FAD1022 - Basic Physics II — added L10 lecture link
  • Wiki health: 290 → 294 total files (+1 source, +3 concepts)

[2026-05-04] ingest | FAD1022 L13 — Wheatstone Bridge and Voltage Divider

Ingest | Lecture 13 — Electrical Measurements

  • Processed: 21 PNG images from /home/kuumin/docs/nothingburger/.temp_pdf_images/l13-*.png via direct image rendering
  • Created source: FAD1022 L13 — Wheatstone Bridge and Voltage Divider — Complete lecture summary covering:
    • Voltage Divider (Potential Divider) — Definition, purposes, applications (potentiometer, level shifters)
    • Unloaded Voltage Divider — Circuit configuration, derivation using Kirchhoff's laws
    • Voltage Divider Formula: $V_{out} = V_{in} \times \frac{R_2}{R_1 + R_2}$
    • Loaded Voltage Divider — Loading effects, parallel resistance $R_p = \frac{R_2 R_L}{R_2 + R_L}$
    • Wheatstone Bridge — Circuit components, balance condition, derivation
    • Wheatstone Bridge Formula: $R_x = \frac{R_1 \cdot R_3}{R_2}$
    • Slide Wire Bridge — Laboratory implementation for resistance measurement
    • 4 worked problems with complete solutions (Problems #13.1 through #13.4)
  • Created concept: Voltage Divider — Detailed concept page with circuit diagrams, derivation, applications, loading effects, and worked examples
  • Created concept: Wheatstone Bridge — Comprehensive page with circuit configuration, balance condition derivation, alternative notations (P/Q/R/S), slide wire bridge, sensor applications, and precision measurement techniques
  • Created concept: Electrical Measurements — Overview of measuring instruments (ammeter, voltmeter, galvanometer, ohmmeter), loading effects, precision techniques, and error sources
  • Created concept: Ammeter and Voltmeter — Detailed instrument construction, ideal vs real characteristics, connection methods, loading effects, multimeter usage, and practical guidelines
  • Updated entity: FAD1022 - Basic Physics II — added L13 lecture link under Lecture Modules
  • Wiki health: 290 → 295 total files (+1 source, +4 concepts)

[2026-05-04] merge | FAD1022 exam scope — merged both leak pages + new exam tips into single guide

Created: Source page for new exam tips

  • Processed: inbox/exam tips.md — WhatsApp voice-note transcript (Adian Sani, 2026-05-04)
  • Created source: FAD1022 Exam Tips — WhatsApp Voice Notes — Full transcript + annotated key themes table and lecturer mappings

Created: Merged comprehensive exam scope

  • Created: FAD1022 Final Exam Scope — Complete Guide — Single authoritative document combining:
    • Structure & marks from FAD1022 Exam Structure — Detailed Leak
    • Topic-by-topic formulas from FAD1022 Exam Focus — Leak Topics
    • New lecturer-specific guidance from WhatsApp tips:
      • Dr Zainal (ZAA): Q-point "storyline" template, direction of current mandate, strict marking
      • Nurul Izzati (NIA): photoelectric + photon momentum + phasor + $X_C$ relationship
      • Hafizul Mat: nuclear derivation required
    • Answering technique rules (1 formula → 1 substitution → 1 answer with unit, velocity selector formula-first, increase/decrease must specify direction)
    • Tutorial focus map (Tuto 8, 12, 13, 1 & 2)

Archived: Old pages marked superseded

Updated

  • Wiki Index — priority list, physics sources count (14→15), synthesis count (21→22), superseded annotations
  • Inbox: exam tips.md processed, moved to sources (archived)
  • Wiki health: 288 → 290 total files (+1 source, +1 synthesis)

[2026-05-04] ingest | Inbox — Modern Physics Lecture + Electrostatics FAD1022 L4-L5

Ingest | Lecture 45 — Photon Momentum, Compton Effect, de-Broglie Waves & Heisenberg Uncertainty

Ingest | FAD1022 L4-L5 — Electric Flux and Gauss's Law

Status: INBOX EMPTY ✅ (3 PDFs processed)

[2026-05-04] ingest | Inbox — Photoelectric Effect Exam Problem Image

Ingest | Photoelectric Effect Worked Example (Exam Favorite)

  • Processed: IMG_20260504_131538.jpg — Photo of Tutorial 15 problem showing photoelectric effect data table
  • Note from user: "Always comes out! Every exam" — High priority problem type
  • Problem: Given two (frequency, stopping potential) pairs, find work function $\phi$ and Planck's constant $h$
  • Created concept: Photoelectric Effect — Worked Examples — Complete worked solution with:
    • Step-by-step derivation using $eV_s = hf - \phi$
    • Simultaneous equations method (subtract to eliminate $\phi$)
    • Final answers: $h = 6.4 \times 10^{-34}$ J·s, $\phi = 2.0$ eV
    • Exam strategy section explaining the linear graph method
    • Key insight: slope of $V_s$ vs $f$ gives $h/e$
  • Archived: Image saved to wiki/assets/examples/photoelectric-exam-problem.jpg
  • Removed: Untitled.md (empty file)
  • Status: INBOX EMPTY ✅

[2026-05-04] ingest | Inbox — Tutorial 15 Modern Physics (Student Version)

Ingest | Tutorial 15: Modern Physics

  • Processed: Tutorial 15 - Modern Physics - Student Version.pdf — Complete tutorial with 5 questions
  • Confirmed exam relevance: Matches Topic #7 in FAD1022 Exam Focus — Leak Topics — Photoelectric Effect (Section B, HIGH priority)
  • Created tutorial: FAD1022 Tutorial 15 — Modern Physics (Student Version) — Full solutions for all 5 problems:
    1. Wave-particle duality explanation
    2. Photoelectric effect — Calculate $h$ and $\phi$ from two data points (the EXAM FAVORITE problem!)
    3. Photon wavelength and momentum (medical laser context)
    4. de Broglie wavelength from KE
    5. Heisenberg uncertainty principle
  • Key insight: Q2 is the exact problem type that "always comes out every exam" — finding $h$ and $\phi$ from two (frequency, stopping potential) pairs
  • Constants provided: $h = 6.63 \times 10^{-34}$ J·s, $e = 1.60 \times 10^{-19}$ C, $c = 3.0 \times 10^{8}$ m/s, $m_e = 9.11 \times 10^{-31}$ kg
  • Archived: PDF moved to raw/tutorials/

Cleanup | Inbox empty files

  • Removed: Untitled.md — contained exam tip (transcribed below)
  • Removed: Untitled 1.md — empty file
  • Exam intel captured: "She'll give 3 cases for work functions for photoelectron" — added to Photoelectric Effect — Worked Examples
  • 3 Cases summarized:
    • Case 1: Given $f$ and $V_s$ (2 data points) → Find $h$ and $\phi$
    • Case 2: Given photon energy and $K_{max}$ → Find $\phi = E - K_{max}$
    • Case 3: Given threshold frequency $f_0$ → Find $\phi = hf_0$
  • Status: INBOX EMPTY ✅

[2026-05-04] CREATE — FAD1022 Final Exam Scope (Priority Topics)

Created | FAD1022 — FINAL EXAM SCOPE (Priority Topics)

  • Synthesized from: Lecture 45, FAD1022 L4-L5, Tutorial 15, and exam intel
  • Created: FAD1022 — FINAL EXAM SCOPE (Priority Topics) — Comprehensive priority study guide
  • Priority 1: Modern Physics (Section B guaranteed)
    • Photoelectric Effect — THE EXAM FAVORITE (appears every exam)
      • All 3 cases documented with formulas and strategies
      • Case 1: Two $(f, V_s)$ pairs → Find $h$ and $\phi$
      • Case 2: Given $E$ and $K_{max}$ → $\phi = E - K_{max}$
      • Case 3: Given $f_0$ → $\phi = hf_0$
    • de Broglie wavelength — formulas for both $v$ and $KE$ given
    • Heisenberg Uncertainty — minimum uncertainty calculations
    • Photon momentum — $p = h/\lambda = E/c$
    • Compton Effect — wavelength shift formula
  • Priority 2: Electrostatics (Gauss's Law)
    • Electric flux and closed surfaces
    • All Gauss's Law applications (point, line, plane, parallel plates, conductors)
    • Conductor properties ($E = 0$ inside, charge on surface)
  • Priority 3: Electric Potential
    • $V = kQ/r$, superposition principle
    • Potential energy calculations
  • Quick Reference: All constants table, exam strategy, practice checklist
  • Added to: Wiki Index Priority section (top of index)
  • Purpose: One-page exam preparation guide covering guaranteed topics

[2026-05-04] CREATE — CQ Drill Packs for FAD1022

Created 6 Rapid-Fire Drill Packs for Continuous Quizzes (CQ)

[2026-05-04] HIGH PRIORITY — Inbox Settlement

Ingest | Scanned PDF — FAD1014 Final Exam Scope 2025-2026

  • Processed: Scan files_20260504_104011(1).pdf via pdftoppm → 9 PNG images, read sequentially
  • Created source: FAD1014 — Final Exam Scope 2025-2026 — Complete exam breakdown:
    • Part A (24 marks): Basic integration, definite integrals, area under curve, separable DEs, parabola/ellipse/hyperbola, intro to series, method of differences, Binomial I
    • Part B (56 marks): Advanced integration (parts, trig, partial fractions), area between curves, volumes, homogeneous/linear DEs, Taylor/Maclauring series, circle, parametric equations, Binomial II (negative/fractional indices)
    • All topics organized in tables with Part A/Part B checkmarks
  • Updated entity: FAD1014 - Mathematics II — added exam scope link
  • Archived: PDF moved to raw/
  • Wiki health: 268 → 269 total files

Crosscheck | Inbox — New leak files clarify exam scope

  • Processed: leak.md — Text leak confirming Part A topics and "No Part A" topics
  • Critical Finding: Only Taylor & Maclaurin series are explicitly confirmed as Part B
  • Clarified scope:
    • Part A confirmed: Basic integration, definite integrals, area under curve, separable DEs, series intro, method of differences, Binomial I, parabola/ellipse/hyperbola
    • Not in Part A: Advanced integration, area between curves, volumes, homogeneous/linear DEs, Binomial II, circle, parametric equations
    • Part B confirmed: Only Taylor & Maclaurin series
  • Updated source: FAD1014 — Final Exam Scope 2025-2026 — Reformatted to show only confirmed statuses; Part B status marked as "unconfirmed" except for Taylor/Maclauring
  • Removed: Untitled.md (empty file), leak.md (processed)
  • Status: INBOX EMPTY ✅

Ingest | Missing Slide — Sequence & Series Exam Scope

  • Processed: WhatsApp Image 2026-05-04 at 11.10.07.jpeg — direct image read
  • Updated source: FAD1014 — Final Exam Scope 2025-2026 — Added missing Sequence & Series section:
    • Part A (confirmed): Introduction to series (converge/diverge), Summation of Finite Series (Method of Differences), Binomial expansion I ($(a+b)^n$, positive integer $n$)
    • Part B (unconfirmed): Slide only shows Part A — Part B status unclear for these topics
  • Note: Taylor/Maclauring series are confirmed Part B from earlier slides
  • Archived: Image moved to wiki/assets/
  • Wiki health: 269 total files (scope updated)

Ingest | Inbox — Parametric Equations PDF → source page

  • Processed: L32 CONTINUE PARAMETRIC EQUATIONS.pdf via pdftotext extraction
  • Created source: FAD1014 L32 — Parametric Equations — Complete lecture summary: parametric representation of circles ($x-h = r\cos t$, $y-k = r\sin t$), parabolas (horizontal and vertical orientations), ellipses ($x-h = a\cos t$, $y-k = b\sin t$), hyperbolas (vertical and horizontal orientations), all Cartesian derivations using $\cos^2 t + \sin^2 t = 1$ and $1 + \tan^2 t = \sec^2 t$, and 3 practice problems with solutions
  • Updated entity: FAD1014 - Mathematics II — added L32 lecture link
  • Updated concept: Geometry - Circle — added parametric equations section
  • Updated concept: Geometry - Parabola — added parametric equations section
  • Updated concept: Geometry - Ellipse — added parametric equations section
  • Updated concept: Geometry - Hyperbola — added parametric equations section
  • Archived: PDF moved to raw/lectures/
  • Lecturer: En Hisham Safuan Mohamad Sukri — confirmed
  • Wiki health: 267 → 268 total files

Cleanup | Inbox markdown files already processed

  • leaks.md — already ingested (2026-05-02), removed from inbox
  • Leaks 2.md — already ingested (2026-05-02), removed from inbox

Status: INBOX EMPTY ✅

[2026-05-02] create | Final Exam Prep folder — 4 drill packs + 2 physics strategy pages

[2026-05-02] ingest | Inbox leaks → 5 synthesis exam-focus pages across 4 subjects

  • Processed inbox: leaks.md, Leaks 2.md, PHY tipzz.pdf, Tutorial 14.pdf, NFRA Final Exam Schedule.pdf
  • Created synthesis: FAD1014 Exam Focus — Leak Topics — Maclaurin, Ellipse, DE (314 lines)
  • Created synthesis: FAD1015 Exam Focus — Leak Topics — R matrix ops, Permutation, Hypothesis Testing (654 lines)
  • Created synthesis: FAC1004 Exam Focus — Leak Topics — Tangent Expansion, Sir Hisham-style Section B (620 lines)
  • Created synthesis: FAD1022 Exam Focus — Leak Topics — All 8 physics leak topics (626 lines)
  • Created synthesis: FAD1022 Exam Structure — Detailed Leak — Section A/B/C breakdown with question selection strategy, Bohr radius derivation, past-year patterns
  • Archived: Tutorial 14 → raw/tutorials/ (already existed), NFRA schedule → raw/ (exam timetable), PHY tips → raw/lectures/ (scanned OCR leak)
  • Inbox remaining: leaks.md, Leaks 2.md (text leaks kept for reference)
  • Wiki health: 255 → 260 total files

[2026-04-30] ingest | FAD1018 Electrochemistry — 3 lecture PDFs → 3 source pages, concept updates

  • Processed inbox: 3 FAD1018 Electrochemistry PDFs via direct image rendering (pdftoppm → PNGs)
  • L1 L2 Electrochemistry (L1 L2 EC - STDN Copy.pdf, 82 slides): Rewrote FAD1018 L1-L2 — Electrochemistry with actual slide content — galvanic vs electrolytic cells, redox reactions, cell notation with SMILES, standard electrode potential, standard cell potential formula ($E°_{cell} = E°_{cathode} - E°_{anode}$), worked examples (Zn-Cu cell, identifying cathode/anode, cell potential calculation).
  • Electrochemistry Part 2 (L3 Stdn Copy.pdf, 34 slides): Rewrote Electrochemistry Part 2 with actual slide content — driving force behind electrochemical cells (water tank analogy), equilibrium and dead battery analogy, Nernst equation ($E_{cell} = E° - (RT/nF)\ln Q$), Gibbs free energy relationship ($\Delta G = -nFE_{cell}$), worked examples (Mg/Ca cell potential, Zn/SHE pH calculation Practice 4).
  • Electrolytic Cell Part 3 (L4 L5 EC2526 V2- Stdn copy.pdf, 50 slides): Created FAD1018 L4-L5 — Electrolytic Cell — electrolysis of CuSO₄ with copper electrodes, 3 factors affecting electrolysis products (standard electrode potential, concentration, electrode type), selective discharge and electrochemical series, overpotential/overvoltage effect (oxygen overvoltage, why Cl⁻/Br⁻/I⁻ oxidise before water), industrial implementation (Downs cell, Hall process), Exercise 3 (molten PbBr₂ electrolytic cell).
  • Updated concept: Electrochemistry — added L4-L5 source link, updated descriptions for all 3 electrochemistry sources.
  • Updated entity: FAD1018 - Basic Chemistry II — added L4-L5 lecture link, updated descriptions for L1-L2 and Part 2.
  • Updated entity: Mahfuzah Binti Yusoff — added L4-L5 lecture link, updated teaching list.
  • Archived: All 3 PDFs moved from inbox/ to raw/lectures/
  • Inbox now empty

[2026-04-30] ingest | FAD1014 L29-L30 — Geometry Ellipse PDF → source page, concept updates

  • Processed: 17 PNG slides from L29 & L30 GEOMETRY ELLIPSE.pdf via direct image rendering
  • Created source: FAD1014 L29-L30 — Geometry (Ellipse) — Complete lecture summary: ellipse definition (sum of distances to foci = 2a), full derivation of standard equation from distance formula, intercepts and vertices, latus rectum definition and length formula, horizontal vs vertical oriented ellipses (centre origin), standard equation with centre $(h,k)$, general equation $Ax^2 + By^2 + Cx + Dy + K = 0$, and all worked examples from lecture (Examples 1.0–4.0, 6.0). Includes Mermaid concept map.
  • Updated concept: Geometry - Ellipse — Added derivation section with full algebraic steps, standard equations with centre at origin (horizontal/vertical), detailed latus rectum section with endpoint coordinates, general equation with completing-the-square note, and source link.
  • Updated entity: FAD1014 - Mathematics II — added L29-L30 lecture link under Geometry
  • Updated entity: En Hisham Safuan Mohamad Sukri — added Ellipse lecture link and concept attribution
  • Updated index: FAD1014 lectures 16→17, total files 253→254
  • Archived: PDF moved to raw/lectures/
  • Lecturer: En Hisham Safuan Mohamad Sukri — confirmed from title slide

[2026-04-29] ingest | Inbox — Polymer Lecture, PBL Attachment, EC2526 Tutorial, Group Cards, PBL Trigger Materials

  • Processed inbox: 4 PDFs + 5 images (2 batches)
  • Polymer lecture (Lecture Slide Polymer - 2026 ppt_v1.2.pdf): Updated FAD1018 W14 — Polymer Chemistry with new sections: crystallites, elastomers, fibers, plasticizers, modification of polymer properties, polymer research fields (fiber reinforced composites, sustainable GunPla, crab shell solar cells, self-healing coatings, sustained drug delivery). Updated Polymer Chemistry concept with matching sections. Added 4 new references.
  • PBL attachment (PBL - Student Attachment_wm.pdf): Updated FAD1018 PBL — Polymers and River Pollution with official ground rules, PBL discussion rubric (4 criteria, 10 marks), presentation rubric (4 criteria, 10 marks), lecturer attribution Che Mohd Farhan Bin Che Mat Dusuki.
  • Group cards (3 images): Copied to wiki/assets/pbl/, embedded in PBL page as official group assignment cards.
  • PBL trigger materials (2 images): Comic storyboard showing toy factory scenario, polymerisation, river pollution, and remediation; handwritten poem for Trigger 3 / Case 3. Both copied to wiki/assets/pbl/ and embedded in PBL page with full poem transcription.
  • EC2526 tutorial (EC2526 MY V3 - STDN Copy.pdf): Created EC2526 — Electrochemistry Tutorial — source page for student handout covering galvanic cells, cell notation, half-equations, oxidizing/reducing agents, EMF, salt bridge function. Linked to Electrochemistry and FAD1018 - Basic Chemistry II.
  • Created entity: Che Mohd Farhan Bin Che Mat Dusuki — PBL lecturer (FAD1018)
  • Updated entity: FAD1018 - Basic Chemistry II — added lecturers section, EC2526 tutorial link
  • Updated index: Chemistry sources 23→24, person entities 15→16, total files 250→252
  • Archived: All PDFs moved to raw/lectures/ and raw/tutorials/; images moved to wiki/assets/pbl/
  • Inbox now empty

[2026-04-29] enhance | Mass Mermaid + SMILES Enhancement

SMILES Audit & Fix (Chemistry):

  • Fixed Cl.[NH4+] → [Cl-].[NH4+] in 2 files (ionic charge syntax)
  • Fixed [R] → * wildcard in Amines source (Rutherfordium → generic R-group)
  • Removed markdown text from inside smiles blocks across 12 files (headings # Water, comments, lists caused SyntaxError)
  • Added comprehensive SMILES Syntax Rules to obsidian-chem skill

Mermaid Diagrams (Physics + Math):

  • ~90 new Mermaid diagrams added across ~50 files via 18 parallel subagents
  • Physics concepts: AC Circuits, Capacitors, Electrostatics, Magnetism, Inductance, Semiconductors, Atomic/Nuclear/Modern Physics
  • Math concepts: Integration, DEs, Series, Geometry, Probability, Matrices, Complex Numbers, Inverse Trig, Hyperbolic
  • Physics sources: All 10 FAD1022 lecture files (20 diagrams)
  • Math sources: 18 FAD1014/FAD1015/FAC1004 lecture files (30 diagrams)
  • Synthesis: All 5 mastery sets + Index + Study Plan (10 diagrams)

Index Updated: Added "Wiki Enhancements" section cataloguing all Mermaid and SMILES additions.

[2026-04-29] create | FAD1018 PBL — Polymers and River Pollution

  • Processed inbox: handwritten PBL notes + 2 images (student group brainstorm on polymerisation and river pollution)
  • Created project: FAD1018 PBL — Polymers and River Pollution — structured presentation outline from rough notes: 2 triggers (polymerisation + river pollution), 4 remediation methods table (activated carbon, coagulation/flocculation, pH buffering, bioremediation), 5 learning objectives, presentation rubric (content/delivery/creativity/time management), linked to Polymer Chemistry, Carbonyl Compounds, Carboxylic Acids & Derivatives, and relevant lectures
  • Updated index: added Projects section, updated health stats (246 files)
  • Removed from inbox: Chemistry PBL Project due Next Tuesday.md, Pasted image 20260429101642.png, Pasted image 20260429101659.png
  • Inbox now empty

[2026-04-29] enhance | FAD1018 PBL — added detailed rubric, structure, and planning tools

  • Enhanced FAD1018 PBL — Polymers and River Pollution with production-ready project workspace:
    • Timed presentation structure (7-section breakdown, 20 min total, with time buffer tip)
    • Detailed rubric per criterion: 4-tier grading standard (Excellent/Good/Satisfactory/Poor) with specific chemistry benchmarks
    • Content checklist (7 items mapped to LOs)
    • Delivery tips (signposting language, speaker handoffs)
    • Creativity ideas (mock news report, molecular renders, before/after diagrams)
    • Data & references needed (toxicity LD₅₀, adsorption capacity, pKa values, molecular structures with SMILES)
    • Group task tracker table with status checkboxes
    • Pre-presentation checklist (8 items)
    • Expanded remediation comparison with physical/chemical classification and comparison framework for LO4

[2026-04-29] research | FAD1018 PBL — created dedicated project folder with real-world data

  • Created project folder: wiki/projects/FAD1018-PBL-Polymers-River-Pollution/
  • Created Research Data — Toxicity & Remediation Values — comprehensive data page with:
    • Aquatic toxicity: ethyl acetate LC₅₀ = 230 mg/L (ECHA), acetone LC₅₀ = 300 mg/L (EPA), MEK LC₅₀ = 1,690–3,220 mg/L (WHO)
    • Water solubility data: MEK 256 g/L (very high spread risk)
    • Activated carbon adsorption capacities: acetone 33–107 mg/g, ethyl acetate 61–277 mg/g, MEK fire risk warning
    • pH buffering systems: acetate (pKa 4.76), phosphate (pKa 7.21), carbonate (pKa 10.33)
    • Microplastics as toxic-delivery system (Frontiers 2021, Facets 2022)
    • All sources cited with URLs
  • Created Case Study — 2019 Kim Kim River Toxic Pollution — Malaysian case study:
    • 6,000 affected, 2,775 hospitalised, 8 ICU, 111 schools closed
    • RM 10M+ cleanup, 900 tonnes soil + 1,500 tonnes water removed
    • Timeline, human impact, environmental damage, legal outcome
    • Direct presentation dialogue suggestions for each scene
    • Perfect real-world parallel for the "totally harmless" claim rebuttal
  • Created Lecture Reference Guide — scene-by-scene lecture mapping:
    • Maps each of the 5 presentation scenes to specific wiki lecture pages
    • Lists what to extract from each lecture (mechanisms, equations, examples)
    • Provides "quick facts to cite" for scientists to drop during the presentation
    • Includes pre-presentation study checklist for scientists
  • Created project folder index — navigation hub
  • Updated main PBL page: replaced "Data & References Needed" with "Research Data & Case Studies" section linking to all new files

[2026-04-29] cleanup | Processed inbox — archived existing source, removed non-academic files

  • Archived: Tutorial 14.pdf → raw/tutorials/FAD1022 Tutorial 14 — Atomic Physics.pdf — source PDF for existing tutorial page
  • Already in wiki: FAD1022 Tutorial 14 — Atomic Physics — full transcription exists with all 5 questions (Gold-197 properties, U-235 vs U-238 stability, Al-27 alpha decay feasibility, Tc-99m decay calculations, U-235 fission reaction)
  • Removed from inbox: Pasted image 20260429101055.png and Untitled.md — student roster image, not academic content
  • Inbox now empty

[2026-04-29] cleanup | Removed empty files from inbox

[2026-04-29] create | Cramer's Rule — detailed concept page

  • Created concept: Cramer's Rule — comprehensive page covering: general statement for $n \times n$, why Cramer's Rule works (derivation from adjoint/inverse), 2×2 formula with worked example, 3×3 formula with full 3-equation worked example (all determinants shown step-by-step), $n \times n$ general case, procedure summary, solvability table (unique / infinitely many / no solutions), word problem application (3×3 price problem), comparison with inverse matrix & Gauss-Jordan methods, computational note on $O(n!)$ scaling, and key formulas (2×2 determinant, 3×3 diagonal expansion, cofactor sign pattern)
  • Updated concept: Matrices — shortened Cramer's Rule section to direct readers to dedicated page
  • Updated index: added Cramer's Rule to Mathematics concepts catalogue (20 → 21)

[2026-04-29] ingest | Application of DE - Mixing Problems

[2026-04-29] ingest | FAD1014 Tutorial 13 - Circle, Parabola, Ellipse

[2026-04-29] ingest | L31-L32 Hyperbola

[2026-04-29] catalogue | Full Downloads Survey

[2026-04-27] transcribe | All Tutorial PDFs

  • Transcribed 43 tutorial PDFs into wiki/tutorials/
  • FAD1014: 10 tutorials (Integration, DEs, Series, Geometry)
  • FAD1015: 12 tutorials (Probability, Distributions, Hypothesis Testing)
  • FAC1004: 7 tutorials (Complex Numbers, Inverse Trig, Hyperbolics)
  • FAD1022: 14 tutorials (Electrostatics through Modern Physics)
  • Linked all tutorials to associated concept pages

[2026-04-27] ingest | Inbox PDFs — Bernoulli, Exact, Non-Homogeneous DE + Electrochemistry

[2026-04-27] ingest | Inbox PDFs — FAD1015 Tutorial 13 - Matrices

[2026-04-28] ingest | Lecture 44 - Photons and Photoelectric Effect

[2026-04-28] ingest | FAD1014 L22 - Finite Series and Summation

[2026-04-28] ingest | FAD1014 L21 - Introduction to Series

[2026-04-28] create | Complete Mastery Problem Set Collection

[2026-05-04] restructure | Index audit & structural cleanup

  • Renamed: L1 L2 Electrochemistry → FAD1018 L1-L2 — Electrochemistry
  • Renamed: L31-L32 Hyperbola → FAD1014 L31-L32 — Hyperbola
  • Renamed: Lecture 45 — Photon Momentum... → FAD1022 Lecture 45 — Photon Momentum...
  • Migrated: 20 tutorial source summaries from sources/ → deleted (redundant with tutorials/)
  • Migrated: FAD1014 Tutorial 13 - Circle, Parabola, Ellipse.md → tutorials/
  • Migrated: EC2526 — Electrochemistry Tutorial.md → tutorials/
  • Migrated: FAD1014 — Final Exam Scope 2025-2026.md → synthesis/FAD1014/
  • Created: entity files for FAC1003 - Programming II and FAX1001 - Self Development
  • Deleted: orphaned FAC1001 - Advanced Mathematics II entity
  • Restructured: index.md synthesis section to mirror disk layout (per-course)
  • Fixed: duplicate entries, ghost entities, stale health tip |- Fixed: 10 broken wikilinks from deleted sources tutorial files

[2026-05-07] ingest | FAD1014 Exam Scope — Lecturer Slides

Ingest | Mathematics II Final Exam Scope (8 Slides)

  • Processed: 8 WhatsApp images (IMG-20260505-WA00xx.jpg) — lecturer presentation slides showing Part A/Part B distribution
  • Created source: FAD1014 Exam Scope 2025-2026 — Lecturer Slides — Full transcription of exam scope:
    • Integration: Standard integration (both parts), by Parts & trig substitution (Part B only), partial fractions & powers of trig (excluded)
    • Applications: Only area under curve (Part A); volume of revolution completely excluded
    • DEs: Separable (both parts), Homogeneous (Part B only), Linear (excluded)
    • Series: Convergence, method of differences, Binomial I (both parts); Maclaurin (Part B only); Taylor & Binomial II (excluded)
    • Geometry: Circle excluded; Parabola/Ellipse/Hyperbola (both parts); Parametric (Part B only)
  • Updated synthesis: FAD1014 — Final Exam Scope 2025-2026 — Refreshed with confirmed Part B topics from slides; updated all tables with ✓/✗ for both parts
  • Key findings: Major scope reduction — Circle, Taylor series, Linear DEs, all volume of revolution excluded

[2026-05-07] ingest | FAC1003 Tutorial 14 — OOP & C++ Concepts

Ingest | Programming Tutorial (2 Pages)

  • Processed: 2025_26 FAC1003 Tutorial 14 (Students).pdf — OOP concepts, C++ code tracing, programming exercises
  • Created synthesis: FAC1003 Tutorial 14 — OOP & C++ Solutions — Full solutions in synthesis/FAC1003/tutorials/:
    • Concepts (Q1-8): Detailed explanations with C++ examples for Encapsulation, Abstraction, Inheritance vs Polymorphism, Four Pillars, Constructor/Destructor types
    • Code Tracing (Q9-10): Step-by-step trace with output prediction
    • Applications (Q11-13): Complete working code for Rectangle class, Student class with array operations, Shape polymorphism hierarchy
  • Updated entity: FAC1003 - Programming II — added Synthesis section with solutions link
  • First FAC1003 content in synthesis — established synthesis/FAC1003/tutorials/ structure

[2026-05-07] reindex | Full wiki crawl + index rebuild

Full Inventory

  • Full disk crawl via 5 parallel subagents (sources, concepts, tutorials, synthesis, entities/projects)
  • 368 total .md files: 103 sources (+5 exam-leaks), 75 concepts, 23 entities, 84 synthesis, 66 tutorials, 10 projects
  • Index updated: all section counts corrected (was 358), new entries added
  • Tutorials: Added 3 near-duplicate FAD1015 tutorial variants + ST13 advanced math section
  • Synthesis: Added 4 missing drill packs (CQ2-CQ7), 3 concept formula sheets, FAC1003 tutorial solutions duplicate
  • Concepts: Count corrected from 69 to 75 (all files present, header was stale)
  • Projects: Count corrected from 1 to 10 (folder contents now counted)

[2026-05-09] create | FAD1014 Comprehensive Drill — Full Exam Scope

Created | Comprehensive Scope-Based Rapid-Fire Drill (60 Problems)

  • Created: FAD1014 Comprehensive Drill — All 7 Leak Topics in wiki/synthesis/final-exam-prep/FAD1014/
  • Purpose: Diagnostic across entire confirmed exam scope (lecturer slides = authoritative leak)
  • Design: Rapid-fire format, 2-3 min per problem, 120-180 min estimated time
  • Scope distribution (based on FAD1014 — Final Exam Scope 2025-2026):
    • Part A: Standard integration + substitution + definite (10 problems)
    • Part B: Integration by Parts (6 problems)
    • Part C: Trigonometric Substitution (4 problems)
    • Part D: Area Under Curve (3 problems)
    • Part E: Separable DE (5 problems)
    • Part F: Homogeneous DE (6 problems)
    • Part G: Maclaurin Series (10 problems)
    • Part H: Method of Differences & Binomial I (5 problems)
    • Part I: Parabola (4 problems)
    • Part J: Ellipse (4 problems)
    • Part K: Hyperbola (3 problems)
  • Excluded (per scope NOT TESTED): Linear DE, Bernoulli DE, Exact DE, Non-homogeneous DE, Circle, Taylor series, Binomial II, volume of revolution, partial fractions, trig powers
  • Includes: Full cheat sheet, per-topic weak-spot diagnosis table (14 topics), error log template, complete answer key
  • Proficiency: 70%/85%/93%
  • Wiki health: 377 → 378 total files, synthesis: 88 → 89
  • 2026-05-09 fix | Corrected FAD1022 Section A format: 15 structured questions (not MCQ) — updated 7 synthesis files + WhatsApp voice notes + log.md

[2026-05-10] create | Expectation and Variance concept note

Created

  • Expectation and Variance — Concept note with discrete/continuous formulas, linear transformation rules, and step-by-step procedure

Updated

  • Index: Concepts 75 → 76, Mathematics concepts 22 → 23, total 381 → 382
  • Wiki health: 382 total files (76 concepts)

[2026-05-10] create | Half-Wave Rectification concept note

Created

  • Half-Wave Rectification — Concept note with full derivation ( V_{DC} = V_m/\pi ), circuit explanation, where 0.318 comes from

Updated

  • Index: Concepts 76 → 77, Physics concepts 38 → 39, total 382 → 383
  • Wiki health: 383 total files (77 concepts)
  • Inbox: Created FAD1022_Physics_Prettified.txt — prettified Anki deck (231 cards, full MathJax, subdeck tags, cross-checked vs 50+ source files)
  • Inbox: Cleared physics files (FAD1022_Physics_Prettified.txt, anki sharven dumbass.md, update on physics leaks.md)

2026-05-10

Added

  • Leaks: FAD1022 Exam Leaks 2025-2026 — Added Miss Izzati's new leak (transistor/op-amp circuit analysis, all BJT configs, magnetism ratios, capacitor charging/discharging focus, comparison tables) + Section B detail (differentiate fixed bias, 6-mark derivation, Kirchhoff)
  • Compiled leaks: Exam Leaks 2025-2026 — Quick Reference — Updated FAD1022 section with Miss Izzati's additional leak details
  • Concepts: Created Confidence Interval procedure note sourced from FAD1015 L21-L22 — Estimation of Population Mean
  • Synthesis: Created FAD1015 Confidence Interval Cookbook — cookbook-style exam application guide with 3 recipes ($\sigma$ known, $t$, large $n$), quick-pick decision tree, common traps
  • Synthesis: Created FAD1015 Hypothesis Testing Cookbook — cookbook-style exam guide with 4 recipes (right/z, two-tailed/z, left-tailed/z, two-tailed/t), p-value method, CI method, what-the-numbers-mean section, common traps

Removed

  • Inbox: FAD1022_Physics_Prettified.txt (processed), anki sharven dumbass.md (duplicate), update on physics leaks.md (ingested into wiki)

[2026-05-12] cleanup | Inbox — processed setup docs to wiki/meta/

Created

  • wiki/meta/Pi Setup Plan — Tablet-first AI + Obsidian system architecture (moved from inbox)
  • wiki/meta/VPS Setup Commands — SSH commands and quick reference (moved from inbox)

Removed from inbox

  • pi-setup-plan.md → archived to wiki/meta/
  • Untitled.md (SSH command scratch) → archived to wiki/meta/VPS Setup Commands.md

Updated

  • Index: Added Meta section with links to both new pages
  • Wiki health: 402 total files (+2 meta)
  • Inbox status: INBOX EMPTY ✅ 2026-05-15 create | The Double Cone — Unified Conic Geometry — Synthesis note compressing circle, ellipse, parabola, hyperbola into one framework via the double-napped cone, discriminant classification, and eccentricity continuum. Side-by-side formula table, worked examples, exam traps. wiki/synthesis/FAD1014/

[2026-05-23] inbox-process | Tutorial 7 FAD1014 2025_2026.pdf

  • Filed to: wiki/raw/tutorials/FAD1014/Tutorial 7 FAD1014 2025_2026.pdf
  • Target: raw/tutorials/FAD1014/
  • Subject: Differential Equations Tutorial
  • Files in wiki: 503

[2026-05-23] inbox-process | Tutorial 6 FAD1014 2025_2026.pdf

  • Filed to: wiki/raw/tutorials/FAD1014/Tutorial 6 FAD1014 2025_2026.pdf
  • Target: raw/tutorials/FAD1014/
  • Subject: Solid of Revolution: Volumes by Disk/Washer Method
  • Files in wiki: 505

[2026-05-23] inbox-process | Soalan Tut 5 FAD1014(25.26)..pdf

  • Filed to: wiki/raw/tutorials/FAD1014/Soalan Tut 5 FAD1014(25.26)..pdf
  • Target: raw/tutorials/FAD1014/
  • Subject: Area Between Curves
  • Files in wiki: 506

[2026-05-23] inbox-process | Soalan Tut 4 FAD1014(25.26)..pdf

  • Filed to: wiki/raw/tutorials/FAD1014/Soalan Tut 4 FAD1014(25.26)..pdf
  • Target: raw/tutorials/FAD1014/
  • Subject: Tutorial on Integration Techniques
  • Files in wiki: 508

[2026-05-23] inbox-process | Soalan Tut 3 FAD1014(25.26)..pdf

  • Filed to: wiki/raw/tutorials/FAD1014/Soalan Tut 3 FAD1014(25.26)..pdf
  • Target: raw/tutorials/FAD1014/
  • Subject: Trigonometric Integrals
  • Files in wiki: 510

[2026-05-23] inbox-process | Soalan Tut 2 FAD1014(25.26)..pdf

  • Filed to: wiki/raw/tutorials/FAD1014/Soalan Tut 2 FAD1014(25.26)..pdf
  • Target: raw/tutorials/FAD1014/
  • Subject: Integration by Parts
  • Concept note: Integration by Parts
  • Files in wiki: 510

[2026-05-23] inbox-process | Soalan Tut 1 FAD1014(25.26)..pdf

  • Filed to: wiki/raw/tutorials/FAD1014/Soalan Tut 1 FAD1014(25.26)..pdf
  • Target: raw/tutorials/FAD1014/
  • Subject: Indefinite Integrals and Substitution
  • Files in wiki: 511

[2026-05-23] inbox-process | FAD1014 TUTORIAL 12 25-26.pdf

  • Filed to: wiki/raw/tutorials/FAD1014/FAD1014 TUTORIAL 12 25-26.pdf
  • Target: raw/tutorials/FAD1014/
  • Subject: Power Series: Taylor & Maclaurin Series
  • Files in wiki: 513

[2026-05-23] inbox-process | FAD1014 TUTORIAL 11 25-26 PASUM.pdf

  • Filed to: wiki/raw/tutorials/FAD1014/FAD1014 TUTORIAL 11 25-26 PASUM.pdf
  • Target: raw/tutorials/FAD1014/
  • Subject: Binomial Theorem & Power Series (Taylor & Maclaurin)
  • Files in wiki: 515

[2026-05-23] inbox-process | FAD1014 TUTORIAL 10 25-26.pdf

  • Filed to: wiki/raw/tutorials/FAD1014/FAD1014 TUTORIAL 10 25-26.pdf
  • Target: raw/tutorials/FAD1014/
  • Subject: First Order Linear Differential Equations
  • Files in wiki: 516

[2026-05-23] inbox-process | FAC1004 Tutorial 9 25-26.pdf

  • Filed to: wiki/raw/tutorials/FAC1004/FAC1004 Tutorial 9 25-26.pdf
  • Target: raw/tutorials/FAC1004/
  • Subject: Inverse Hyperbolic Functions
  • Concept note: Inverse Hyperbolic Functions
  • Files in wiki: 516

[2026-05-23] inbox-process | FAC1004 Tutorial 8 25-26.pdf

  • Filed to: wiki/raw/tutorials/FAC1004/FAC1004 Tutorial 8 25-26.pdf
  • Target: raw/tutorials/FAC1004/
  • Subject: Tutorial 8: Hyperbolic Functions
  • Files in wiki: 517

[2026-05-23] inbox-process | FAC1004 Tutorial 7 25-26.pdf

  • Filed to: wiki/raw/tutorials/FAC1004/FAC1004 Tutorial 7 25-26.pdf
  • Target: raw/tutorials/FAC1004/
  • Subject: Derivative of Inverse Trigonometric Functions
  • Files in wiki: 519

[2026-05-23] inbox-process | FAC1004 Tutorial 6 25-26.pdf

  • Filed to: wiki/raw/tutorials/FAC1004/FAC1004 Tutorial 6 25-26.pdf
  • Target: raw/tutorials/FAC1004/
  • Subject: Tutorial 6: Inverse Trigonometric Functions
  • Files in wiki: 521

[2026-05-23] inbox-process | FAC1004 Tutorial 3 25-26.pdf

  • Filed to: wiki/raw/tutorials/FAC1004/FAC1004 Tutorial 3 25-26.pdf
  • Target: raw/tutorials/FAC1004/
  • Subject: Complex Numbers and Loci in Advanced Mathematics II
  • Files in wiki: 523

[2026-05-23] inbox-process | FAC1004 Tutorial 2 25-26.pdf

  • Filed to: wiki/raw/tutorials/FAC1004/FAC1004 Tutorial 2 25-26.pdf
  • Target: raw/tutorials/FAC1004/
  • Subject: Complex Numbers and De Moivre's Theorem
  • Files in wiki: 525

[2026-05-23] inbox-process | FAC1004 Tutorial 10 25-26.pdf

[2026-05-23] inbox-process | test-physics.txt

  • Filed to: wiki/raw/lectures/FAD1022/test-physics.txt
  • Target: raw/lectures/FAD1022/
  • Subject: Physics Notes
  • Files in wiki: 528

[2026-05-23] inbox-process | test-chem.docx

  • Filed to: wiki/raw/lectures/CHEM/test-chem.docx
  • Target: raw/lectures/CHEM/
  • Subject: Electrochemistry: Nernst Equation
  • Files in wiki: 530

[2026-05-24] inbox-process | Summary_Final_Stretch_2_0_Advanced_Mathematics_II_11_Mei_2026.pdf

  • Filed to: wiki/raw/exam-prep/FAC1004/Summary_Final_Stretch_2_0_Advanced_Mathematics_II_11_Mei_2026.pdf
  • Target: raw/exam-prep/FAC1004/
  • Subject: Final Stretch 2.0 Advanced Mathematics II
  • Files in wiki: 533

[2026-05-24] inbox-process | FAC1004 Tonight Full Drill 2026-05-24 15.25.13.excalidraw.md

  • Filed to: wiki/raw/exam-drills/FAC1004/FAC1004 Tonight Full Drill 2026-05-24 15.25.13.excalidraw.md
  • Target: raw/exam-drills/FAC1004/
  • Subject: Full Drill Session for FAC1004
  • Files in wiki: 539

[2026-05-24] inbox-process | FAC1004 Tonight Full Drill 2026-05-24 15.25.13.excalidraw.md

  • Filed to: wiki/raw/assignments/FAC1004/FAC1004 Tonight Full Drill 2026-05-24 15.25.13.excalidraw.md
  • Target: raw/assignments/FAC1004/
  • Subject: Final Practice Drill
  • Files in wiki: 542

[2026-05-24] inbox-process | 1000147418.png

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  • Target: raw/
  • Files in wiki: 549

[2026-05-24] inbox-process | 1000147418.md

  • Filed to: wiki/raw/lectures/MATH101/1000147418.md
  • Target: raw/lectures/MATH101/
  • Subject: Analytic Geometry - Equations of Ellipses
  • Files in wiki: 550

[2026-05-25] inbox-process | G[L11 & L12] APPLICATION OF COMPLEX NUMBERS.pdf

  • Filed to: [[wiki/raw/lectures/EENG/G[L11 & L12] APPLICATION OF COMPLEX NUMBERS.pdf]]
  • Target: raw/lectures/EENG/
  • Subject: Application of Complex Numbers
  • Files in wiki: 554