Feedback and error review.

Try this with Mathematics Extension 2

1. Choose one criterion, teacher comment or mark you want to understand.
2. Compare your answer against that criterion and rewrite only the part that missed it.
3. Try the same skill on a fresh task to see whether you can apply the feedback.

Pick a starting point

• The language of proof: implication, converse, contrapositive and proof by contradiction
• Proving inequalities from a > b and the non-negativity of squares
• The triangle inequality and the AM–GM inequality for two numbers
• Induction for series in sigma notation and for non-standard base cases or steps
• Divisibility and inequality proofs by induction
• Induction in calculus, geometry, the binomial theorem and recursive formulae