Contrapositive of a Conditional Statement

The contrapositive of “p implies q” is “not q implies not p”. It looks quite different, but in fact is logically equivalent to the original conditional, which means we can use them interchangeably.

Learning Objectives:
1) Identify the logical structure of the contrapositive to a conditional
2) Rewrite a sentence in it’s contrapositive form
3) Use that the contrapositive is logically equivalent to a conditional

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This video was created by Dr. Trefor Bazett