# arrow_back What is affirming the consequent?

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What is affirming the consequent?

Affirming the consequent

The fallacy of deducing $P$ from $P \Rightarrow Q$ and $Q$. Also called the converse error. This is a fallacy in mathematical reasoning.

Example

The student knows that if a function is differentiable, then it is continuous. He concludes [ERROR] that the absolute value function is differentiable, since it is clearly continuous.

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