设集合U={1,2,3,4,5,6,7,8},A={1,3,5},B={3,6},求Cu(AUB).

问题描述:

设集合U={1,2,3,4,5,6,7,8},A={1,3,5},B={3,6},求Cu(AUB).

由已知条件可得出 (AUB)={1,3,5,6},
又由U={1,2,3,4,5,6,7,8},(AUB)={1,3,5,6},可得Cu(AUB)={2,4,7,8}.
即(AUB)的补集.