已知集合A={x|x<-1或x>1},B={x|x>1},则A∩B=( )A.{x|x>1}B.{x|x>0}C.{x|x<-1}D.{x|x<-1或x>1}
题型:单选题难度:一般来源:孝感模拟
已知集合A={x|x<-1或x>1},B={x|x>1},则A∩B=( )A.{x|x>1} | B.{x|x>0} | C.{x|x<-1} | D.{x|x<-1或x>1} |
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答案
∵集合A={x|x<-1或x>1},B={x|x>1}, ∴A∩B={x|x>1}=B, 故选A; |
举一反三
集合A={x|≥1},B={y|y=asinθ,θ∈[-,],a>0} (1)求集合A和B; (2)若A∩B=∅,求a的取值范围. |
若集合A={-2,-1,0,1,2},则集合{y|y=|x+1|,x∈A}=( )A.{1,2,3} | B.{0,1,2} | C.{0,1,2,3} | D.{-1,0,1,2,3} |
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设集合U={1,2,3,4},A={1,2},B={2,4},则(∁UA)∪B=( )A.{1,2} | B.{2,3,4} | C.{3,4} | D.{1,2,3,4} |
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已知全集U=R,且A={x 题型:x-1|>2},B={x|x2-6x+8<0},求(CUA)∩B. |
难度:|
查看答案 已知集合M={|=(2t+1,-2-2t),t∈R},N={|=(3t-2,6t+1),t∈R},则M∩N______. |