题目内容
设U={x|x是小于9的正整数},A={1,2,3},B={3,4,5,6},求A∩B,CU(A∩B).
U={x|x是小于9的正整数}={1,2,3,4,5,6,7,8},
又A={1,2,3},B={3,4,5,6},
∴A∩B={3},
CU(A∩B)}={1,2,4,5,6,7,8}.
又A={1,2,3},B={3,4,5,6},
∴A∩B={3},
CU(A∩B)}={1,2,4,5,6,7,8}.
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