设全集U={1,2,3,4,5,6,7,8,9)CU(A并B)={1,3}A交(CUB)={2,4}求B集
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![设全集U={1,2,3,4,5,6,7,8,9)CU(A并B)={1,3}A交(CUB)={2,4}求B集](/uploads/image/z/2692152-0-2.jpg?t=%E8%AE%BE%E5%85%A8%E9%9B%86U%3D%EF%BD%9B1%2C2%2C3%2C4%2C5%2C6%2C7%2C8%2C9%EF%BC%89CU%28A%E5%B9%B6B%EF%BC%89%3D%EF%BD%9B1%2C3%EF%BD%9DA%E4%BA%A4%EF%BC%88CUB%EF%BC%89%3D%EF%BD%9B2%2C4%EF%BD%9D%E6%B1%82B%E9%9B%86)
设全集U={1,2,3,4,5,6,7,8,9)CU(A并B)={1,3}A交(CUB)={2,4}求B集
设全集U={1,2,3,4,5,6,7,8,9)
CU(A并B)={1,3}
A交(CUB)={2,4}
求B集
设全集U={1,2,3,4,5,6,7,8,9)CU(A并B)={1,3}A交(CUB)={2,4}求B集
看图B={5,6,7,8,9}
依题:A并B={2,4,5,6,7,8,9}
又:A交(CUB)={2,4}即{2,4}属于A且不属于B
所以B={5,6,7,8,9}
B={5,6,7,8,9}
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