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L5[1] - Review Recall Proof methods for a statement p q...

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Review Recall: Proof methods for a statement Direct: Assume is true, prove is true. By Contraposition: Assume is true, prove that is true. By Contradiction: Assume is true, assume is true. If a contradiction is found, the proof is complete. p q p q q p p q
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Exercise Prove by contradiction that is irrational. (on board) 2
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