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What proof means

What proof means

Flowchart of algebraic proof forms showing integer n, even 2n, odd 2n+1, consecutive numbers, and target forms like 2k+1, mk, and p^2

A proof is a logical argument that shows a statement is true for every allowed value. Testing a few numbers can suggest a pattern, but it cannot guarantee the pattern always continues.

Proof Lesson

  1. IGCSE
  2. /Maths
  3. /Proof

Step-by-step lessons covering Oxford AQA IGCSE Maths Proof for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 (Core: 1C and 2C; Extension: 1E and 2E) format. Since content from any part of the specification can appear on either paper, keep number and algebra fluency sharp throughout the course rather than leaving it until near the exam.

Lessons

Quadratic Simultaneous EquationsTransforming Graphs y=f(x)ProofCompleting the SquareInverse and Composite FunctionsQuadratic InequalitiesSequences (Higher)DifferentiationVectors Proof QuestionsProbability Equation Questions