1.全集U=AUB={1,3,5,7,9},An(CuB)={3,7},(CuA)nB={5,9},求AnB.2.全集U=R,A={x|a-4

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1.全集U=AUB={1,3,5,7,9},An(CuB)={3,7},(CuA)nB={5,9},求AnB.2.全集U=R,A={x|a-4

1.全集U=AUB={1,3,5,7,9},An(CuB)={3,7},(CuA)nB={5,9},求AnB.2.全集U=R,A={x|a-4
1.全集U=AUB={1,3,5,7,9},An(CuB)={3,7},(CuA)nB={5,9},求AnB.
2.全集U=R,A={x|a-4

1.全集U=AUB={1,3,5,7,9},An(CuB)={3,7},(CuA)nB={5,9},求AnB.2.全集U=R,A={x|a-4
1.画韦氏图得AnB={1}
2.CuB={x|-1