Cu(AUB)={1,3},
AUB={2,4,5,6,7,8,9,}
An(CuB)={2.4},
B=AUB-{2,4}={5,6,7,8,9}
设空集U={1,2,3,4,5,6,7,8,9},Cu(AUB)={1,3},An(CuB)={2.4},求集合B
设空集U={1,2,3,4,5,6,7,8,9},Cu(AUB)={1,3},An(CuB)={2.4},求集合B
数学人气:753 ℃时间:2019-08-21 13:17:21
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