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={x|x2-2x=0}, ={0,1,2},则A.∩B.= ( ) A.{0,2}B.{0,1} {0} {0,1,2}
={x∈Z.|-1≤x≤2},集合 ={0,2,4},则A.∩B.=( ) A. {0,2} B. {0,2,4} {-1,0,2,4} {-1,0,1,2,4}
={x|x2-5x-6<0}, ={x|2x<1},则图中阴影部分表示的集合是( ) A.{x|2{x|0≤x<6} {x|x<-1}
={x|ax2+2x+a=0,a∈R.},若集合A.有且仅有2个子集,则实数a的取值是( ) A.1 0,1 -1, 1 -1,0,1
={x|﹣1<x<2}, ={x|x2+2x≤0},则A.∩B.=( ) A.{x|0<x<2}B.{x|0≤x<2} {x|﹣1<x<0} {x|﹣1<x≤0}
={x|x2-x-2≤0},集合 为整数集,则A.∩B.=( ) A.{-1,0,1,2}B.{-2,-1,0,1} {0,1} {-1,0}
={x|x2-2x=0}, ={0,1,2},则A.∩B.=( ) A.{0}B.{0,1} {0,2} {0,1,2}
={x|x>1}, ={x|x2﹣2x<0},则A.∪B=( ) A.{x|x>0}B.{x|x>1} {x|1<x<2} {x|0<x<2}
={x|(x-1)(x+2)=0}; ={x|(x+2)(x-3)=0},则集合A.∪B.是( ) A.{-1,2,3} B.{-1,-2,3} {1,-2,3} {1,-2,-3}
{﹣1,0} {0,1} {﹣2,﹣1,0,1} {0,1,2}
={-2,-1,0,2}, ={x|(X-1)(x+2)<0},则A.∩B= (A.){--1,0} (B.){0,1} ( ){-1,0,1} ( ){,0,,1,2}
{0,1} {﹣1,0,1} {﹣2,0,1,2} {﹣1,0,1,2}
={-2,-1,0,1,2},B={x|(x -1)(x+2)<0},则A.∩B=( ) A. {--1,0} {0,1} {-1,0,1} {,0,,1,2}
={0,1,2},集合 ={x|x=2m,m∈N},则A.∩B=( ) A.{0}B.{0,2} {0,4} {0,2,4}