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={-1,3,5},若f:x→2x-1是集合A.到集合 的映射,则集合B.可以是( ) A.{0,2,3}B.{1,2,3} {-3,5} {-3,5,9}
={1,2}, ={2,3,4},那么集合A.∩B.等于( ) A.{2}B.{2,3} {1,2,3} {1,2,3,4}
={1,2},则满足的集合 的个数是A.1 B.3 4 8
={-1,3,5},若f:x→2x-1是集合A.到集合 的映射,则集合B.可以是 ( ) A.{-3,5,9 , 10}B.{1,2,3} {-3,5} {0,2,3}
={x|x2﹣4<0}, ={1,2,3},则A∩B.=( ) A.{1,2,3} B.{1,2} {1} {2}
={1,2,3},集合 ={2,3,4},则A.∩B.等于( ) A.{2,3}B.{1,2} {3,4} {1,2,3,4}
={x|-3≤2x-1≤3},集合 为函数y=lg(x-1)的定义域,则A.∩B.= ( ) A.(1,2)B.[1,2] [1,2) (1,2]
-ρ( = (60) 。A) 1,2,2,3,1,2,3 1,1,3,2,3,1,2,3。
={1,2,3}, ={x|﹣1<x<3,x∈Z.},则A.∪B.等于( ) A.{1}B.{1,2} {0,1,2,3} {1,2,3}
={1,2}, ={1,2,3},C={2,3,4}则 ( ) (A.) {1,2,3} (B.) {1,2,4} ( ) {2,3,4} ( ) {1,2,3,4}
={2,3},集合 ={0,1},则A.∪B.等于( ) A.∅ B.{1,2,3} {0,1,2} {0,1,2,3}
{1,2} {5} {1,2,3} {3,4,6}