A.ψ
B.{2}
C.{1}
D.{-2}
设集合A=(-2,-1,0,1,2),B=(x|0≤x<(5)/(2)),则A∩B=( )A. {0,1,2}B. {-2,-1,0}C. {0,1}D. {
设集合A=(x|x2-4≤0),B=(x|2x+a≤0),且A∩B=(x|-2≤x≤1),则a=( )A. -4B. -2C. 2D. 4
[单选题]已知集合A={0,1},B={yy2=1-x2x∈A},则A与B的关系是().A . A=BB . ABC . A∈BD . AB
已知集合A=(x∈R|3x+2>0),B=(x∈R|(x+1)(x-3)>0),则A∩B=( )A. (3,+∞)B. $(-1,-\frac{2}{3})$C
设集合A= x|-dfrac {1)(2)lt xlt 2} , B=(x|x2≤1), 则A∪B=( )(2009北京, 1, 5分)设集合A=, B={x
[题目]-|||-(2014·北京卷)已知集合 = x|{x)^2-2x=0} , = 0,-|||-1,2),则 cap B=()-|||-A.(0)B.(
已知集合A=(x|3x<x+4),B=(x|x2-8x+7<0),则A∩B=( )A. (-1,2)B. (2,7)C. (2,+∞)D. (1,2)
[单选题]若集合A={x|-2<x<1},B={x0<x<2}则集合A ∩ B=( )A. {x|-1<x<1} B. {x|-2<x<1}C. {x|-2<x<2} D. {x|0<x<1}
已知全集U=R,集合A=(x|-2≤x<3),B=(x|x<-1或x≥4),那么集合A∩B等于( )A. {x|-1<x<3}B. {x|x≤-1或x>3}C.
已知lim _(xarrow +infty )(x)^a[ sqrt ({x)^2+1}+sqrt ({x)^2-1}-2x] =bneq 0 x]=b≠0,则