已知集合U={0,1,2,3,4,5,6},A={0,1,2,3},B={x|x=2k,k∈A},(CUA)∪B=______. |
∵A={0,1,2,3}, B={x|x=2k,k∈A}={0,2,4,6}, 又∵U={0,1,2,3,4,5,6}, ∴CUA={4,5,6}, ∴(CUA)∪B={0,2,4,5,6} 故答案为:{0,2,4,5,6} |
核心考点
试题【已知集合U={0,1,2,3,4,5,6},A={0,1,2,3},B={x|x=2k,k∈A},(CUA)∪B=______.】;主要考察你对
集合运算等知识点的理解。
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举一反三
已知集合A={x∈R|x2≤4},B={x∈N|≤3},则A∩B( )A.(0,2] | B.[0,2] | C.{1,2} | D.{0,1,2} |
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已知全集U=Z,A={-2,-1,0,1,2},B={x|x2+2x=0},则A∩CUB=( )A.{-2,0} | B.{2,0} | C.{-1,1,2} | D.{-2,0,2} |
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设集合A={5,log2(a+3)},集合B={a,b},若A∩B={2},则a+b等于( ) |
设集合A={x|≤0},B={x题型:x|<1},则A∪B=( )A.{x|≤x<1} | B.{x|-1<x≤2} | C.{x|-1<x<2且x≠1} | D.{x|-1<x<2} |
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难度:|
查看答案 已知U={y|y=log2x,x>1},P={y|y=,x>2},则CuP=( )A.[,+∞) | B.(0,) | C.(0,+∞) | D.(-∞,0)∪(,+∞) |
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