已知全集U=(－∞,4】,A=(-1,3),B=(－∞,1】,求(1)CuA (2)Cu(A∩B)
(1)CuA =(－∞,-1】∪【3,4】
(2)Cu(A∩B)==(－∞,-1】∪（1,4】
已知全集U=(－∞,4】,A=(-1,3),B=(－∞,1】,求(1)CuA (2)Cu(A∩B)
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