你可能感兴趣的试题
(﹣2,4) [﹣2,4) (0,2) (0,2]
={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|x2-4x+3=0,x∈R.}, ={x|0<x<5,x∈N.},则满足条件A.⊆ ⊆B.的集合C.的个数为( ) A.1 B.2 C.3 4
={x|x2﹣4x﹣5<0}, ={x|2<x<4},则A.∩B=( ) A.(1,3)B.(1,4) (2,3) (2,4)
={(x,y)|x+2y﹣4=0},集合 ={(x,y)|x=0},则A.∩B.=( ) A.{0,2}B.{(0,2)} (0,2) ∅
={x|x2-3x+2=0}, ={x|x=2a,a∈A.},则集合∁U.(A.∪B.)中元素的个数为( ) A.1B.2 3 4
={x∈R.|x2﹣4x<0}, ={x∈R.|2x<8},则A.∩B.=( ) A.(0,3)B.(3,4) (0,4) (﹣∞,3)
={x|0≤x≤2}, ={y|0≤y≤4},下列对应关系不能构成从集合A.到集合B.的映射的是( ) A.y=2xB.y=x y=x2 y=4x-1
={x∈N|0≤x≤5},∁A. ={1,3,5},则集合B.=( ) A.{2,4}B.{0,2,4} {0,1,3} {2,3,4}
={x|x2﹣4x<0}, ={x|x<a},若A.⊆B.,则实数a的取值范围是( ) A.(0,4]B.(﹣∞,4) [4,+∞) (4,+∞)
={0,1,2},集合 ={x|x=2m,m∈N},则A.∩B=( ) A.{0}B.{0,2} {0,4} {0,2,4}