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

问题描述:

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

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}