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[单选题]
【数学】设集合A=(-∞,-1),全集为R,则集合A的补集是()
A.(-∞-1]
B.[-1,+∞)
C.(-1,+∞)
D.(-∞,-1)
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
B、[-1,+∞)
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.(-∞-1]
B.[-1,+∞)
C.(-1,+∞)
D.(-∞,-1)
B、[-1,+∞)
设全集U={0,1,2,3},集合M={0,1,2},N={0,2,3},则M∩CuN=()
A.空集
B.{1}
C.{0,1,2}
D.{2,3}
设全集E为复数集合,A为实数集合,,则补集等于().
A.Ø
B.虚数集合心
C.有理数集合
D.无理数集合
设全集为U=R,集合A={x|x≥-2},集合B={x|x<3},则CvA∩B的集合为
A.{x|-2≤x<3}
B.{x|x≤-2}
C.{x|x<3}
D.{x|x<-2}
A.{1,2}
B.{5}
C.{1,2,3}
D.{3,4,6}
A.0
B.3
C.2
D.1