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Logical equivalence: De Morgan’s law

In this video, York student Salomé shows how we can test for logical equivalence using a truth-table, demonstrating De Morgan's law.

This video gives an example of testing for logical equivalence using a truth-table. In this case, we show that ‘(P & Q)’ is logically equivalent to ‘~(~P (vee) ~Q)’. This equivalence is called De Morgan’s Law.

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Logic: The Language of Truth

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