已知全集U={1,2,3,4,5,6,7,8,9},A、B是U的子集,同时满足A∩B={2},(CuA)∩B={1,9},(CuA)∩(Cub)={4,6,8},求A,B
人气:123 ℃ 时间:2019-08-18 05:56:20
解答
A={2,3,5,7} B={1,2,9}∵A∩B={2}∴2属于A,2属于B∵(CuA)∩B={1,9}∴1和9属于CuA,即不属于A;1和9属于B∵(CuA)∩(Cub)={4,6,8},∴4,6,8属于CuA和CuB∴4,6,8不属于A和B对于在三个条件中都没遇到的3个元素:3,5,7...
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