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={1,2,3,4}, ={y|y=3x-2,x∈A.},则A.∩B.=( ) A.{1}B.{4} {1,3} {1,4}
[-2,1] [-2,1) [1,3] (1,3]
={1,2,3,4}, ={y|y=3x﹣2,x∈A.},则A.∩B.=( ) A.{1}B.{4} {1,3} {1,4}
={x|x2﹣4x﹣5<0}, ={x|2<x<4},则A.∩B=( ) A.(1,3)B.(1,4) (2,3) (2,4)
{1,3} {-3,-1,1,3} {2-,1,3} {-2-,1,3}
={x|x2﹣2x﹣3=0}, ={x|﹣2<x<3},则A.∩B.=( ) A.{﹣1,3}B.{﹣1} {3} ∅
={x|x≥3或x≤1}, ={x|x2﹣6x+8<0},则(∁R.A.)∩B.=( ) A.(1,3)B.(1,4) (2,3) (2,4)
{1,3} {-3,-1,1,3} {2-,1,3} {-2-,1,3}
(﹣1,2) (0,1) (﹣1,0) (﹣1,3)
(1,3) [1,3] {1,3} {1,2,3}
={x|﹣1<x<2}, ={x|0<x<3},则A.∪B.=( ) A.(﹣1,3)B.(﹣1,0) (0,2) (2,3)
={x|2={x|(x-1)(x-3)<0},则A.∩B.=( ) A.(1,3)B.(1,4) (2,3) (2,4)
={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}
(1,3) (1,3] [﹣1,2) (﹣1,2)
{1,3} {-3,-1,1,3} {2-,1,3} {-2-,1,3}
={x|-1= ( ) A.(-1,3) B.(-1,0) (0,2) (2,3)