Disproof By Counterexample | Year 1 Pure | A Level Maths
Disproof by counterexample is a powerful technique for showing that a general statement is false by producing a single example that contradicts it. In this lesson you will learn how to test general claims, identify cases where a statement fails, and present a clear counterexample, for instance disproving that n^2 — n + 1 is prime for all values of n. This rigorous approach to mathematical reasoning is rewarded under AO2 and supports later work on proof by contradiction.
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Lesson Video On Disproof By Counterexample
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