HSC Maths Ext 1 study materials
HSC Maths Ext 1 study resources

HSC Maths Ext 1 study plan

HSC Maths Ext 1 · Give each week a clear focus.

8 weeks · About 6 hours per week

Week 1

Functions & Calculus

  • Sketch and classify the standard function families (polynomial, rational, exponential, logarithmic, absolute value) and state their domains and ranges from memory

  • Solve inequalities involving absolute values and rational functions, writing solution sets in interval notation

  • Apply the quotient, product and chain rules to differentiate composite expressions without referring to notes

  • Compute equations of tangents and normals to curves at given points and find stationary points using the first derivative

Your checkpoint

A one-page formula and technique sheet plus 15 fully worked differentiation and function-sketching problems, self-marked with errors annotated

Week 2

Functions & Proof

  • Prove statements by mathematical induction, including divisibility and inequality cases, with correct base case and inductive step structure

  • Distinguish and construct direct proofs, proofs by contradiction and counterexamples

  • Perform polynomial division and use the remainder and factor theorems to solve parameter problems

  • Graph inverse functions and composite functions, stating restricted domains explicitly

Your checkpoint

Five complete induction proofs written under timed conditions (12 minutes each) plus a written list of common structural mistakes you made

Week 3

Trigonometric Functions & Calculus

  • Derive and apply the three Pythagorean identities and the compound-angle and double-angle formulas

  • Solve trigonometric equations over a stated domain, expressing all general solutions correctly

  • Differentiate and integrate trigonometric functions, including expressions requiring substitution or reverse chain rule

  • Sketch trigonometric graphs with correct amplitude, period and phase shift, and identify their symmetries

Your checkpoint

A 20-question mixed trigonometry and calculus mini-test completed in 45 minutes, marked with a topic-by-topic accuracy tally

Week 4

Calculus & Combinatorics

  • Evaluate definite integrals using substitution and identify when a change of limits is required

  • Find areas between curves and volumes of solids of revolution, setting up the integral before computing

  • Apply the product, sum and pigeonhole principles to counting problems

  • Compute permutations and combinations and solve arrangement problems with restrictions

Your checkpoint

A timed 50-minute practice paper covering integration applications and combinatorics, scored and reviewed against a written error log

Week 5

Combinatorics & Vectors

  • Expand binomial expressions and find general terms, coefficients and specific powers

  • Solve probability problems involving binomial coefficients and counting arguments

  • Perform vector addition, scalar multiplication and dot product in two and three dimensions

  • Use vectors to prove geometric results such as collinearity and perpendicularity

Your checkpoint

A written proof portfolio of six vector geometry proofs and six binomial expansion problems, each with a one-line justification of method choice

Week 6

Vectors & Statistical Analysis

  • Resolve vectors into components and solve force and displacement problems using vector methods

  • Compute and interpret the mean, median, mode, variance and standard deviation of a data set

  • Standardise values using z-scores and calculate probabilities from the normal distribution

  • Distinguish discrete from continuous random variables and compute expected value

Your checkpoint

A one-page statistical summary template plus 12 mixed vector and statistics problems solved with all working shown

Week 7

Trigonometric Functions & Proof & Statistical Analysis

  • Re-derive trigonometric identities from scratch to confirm retention

  • Write a contradiction proof and an induction proof under exam timing without notes

  • Interpret correlation and regression output and describe the strength and direction of a relationship

  • Identify and correct your three most frequent errors from earlier weeks

Your checkpoint

A corrected error log showing before-and-after solutions for your ten weakest question types

Week 8

Functions & Trigonometric Functions & Calculus & Combinatorics & Proof & Vectors & Statistical Analysis

  • Complete two full-length timed papers under exam conditions with no reference material

  • Allocate time across sections deliberately and review flagged questions

  • Classify every error as conceptual, procedural or careless and target the largest category

Your checkpoint

Two completed timed papers with a scored summary sheet and a final one-page revision sheet of formulas and proof templates

Milestones

Week 2: Can complete an induction proof and a polynomial remainder problem unaided in under 15 minutes each with full marks

Week 4: Scores at least 70 percent on the timed integration and combinatorics paper, with no repeated error type from week 1

Week 6: Correctly answers at least 8 of 10 mixed vector and statistics questions, including one full geometric proof

Week 8: Scores at least 75 percent on both full-length timed papers and has a completed error log and revision sheet