问题
解答题
设合集U={1,2,3,4,5,6,7},集合A={1,3,5,7},集合B={3,5},求:
(1)A∪B;
(2)(∁UA)∪B.
答案
(1)∵集合A={1,3,5,7},集合B={3,5},
∴A∪B={1,3,5,7},
(2)U={1,2,3,4,5,6,7},集合A={1,3,5,7},
∴CUA={2,4,6},集合B={3,5},
∴(∁UA)∪B={2,3,4,5,6}.