Question: 13. Show that if ( A ) and ( B ) are sets, then ( overline{A cap B}=bar{A} cup bar{B} ) (a) by showing each

13. Show that if $ A $ and $ B $ are sets, then $ \overline{A \cap B}=\bar{A} \cup \bar{B} $ (a) by showing each side is a subset of the other side. (b) using set builder notation and logical equivalences laws. (c) using a membership table.

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