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数学
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若全集U为R,A={x|1≤x≤2},若B并A在R中的的补集=R,B交A在R中的补集={x|0
人气:332 ℃ 时间:2020-02-04 06:16:37
解答
∵全集U为R,A={x|1≤x≤2},
∴CuA={x|x2}
∵B并A在R中的的补集=R,B交A在R中的补集={x|0
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