§-Quick questions
NSWMaths Extension 2Proof (MEX-P1)
Quick questions on The nature of proof in HSC Mathematics Extension 2: direct proof, proof by contradiction, contrapositive and disproof by counterexample
1short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is a counterexample that does not satisfy the hypothesis?Show answer
To disprove "if then ", your example must satisfy and fail . An example failing proves nothing.
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