prove that:

A^c ∩ B^c ⊆ (A U B)^c

thank you

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- May 4th 2010, 08:22 PMslipz418Set Theory Help
prove that:

A^c ∩ B^c ⊆ (A U B)^c

thank you - May 4th 2010, 08:42 PMjakncoke
first of all is c an element or a set?

- May 4th 2010, 08:45 PMslipz418
sorry...i didnt know how to type the complement sign...

- May 4th 2010, 09:41 PMjakncoke
Assume By Def, and so which means remember the distributive laws work on sets.