已知集合A={x|3≤x<7},B={x|2<x<10},求(CrA)∩B,A∪(CrB).
人气:204 ℃ 时间:2020-09-10 09:42:51
解答
(CrA)∩B={x|2<x<3或7≤x<10},A∪(CrB)=空集.
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