你可能感兴趣的试题
={1,2,3}, ={x|(x+1)(x-2)<0,x∈Z.},则A.∪B.=( ) A.{1} B.{1,2} {0,1,2,3} {-1,0,1,2,3}
={1,2,3}, ={x|(x+1)·(x-2)<0,x∈Z.},则A.∪B.= ( ) A.B.{1,2} {0,1,2,3} {-1,0,1,2,3}
{﹣2,﹣1,0,1,2} {﹣1,0,1,2} {﹣1,0,1,2,3} {﹣2,﹣1,0,1,2,3}
{1,2,3} {0,1,2,3} {2} {﹣1,0,1,2,3}
={x∈Z|﹣1<x≤3},集合 ={1,2},则集合A.∩(∁R.B.)=( ) A.{0,3}B.{﹣1,0,1,2,3} {﹣1,0,3} {﹣1,0}
{1} {1,2} {0,1,2,3} {﹣1,0,1,2,3}
{1,2,3} {0,1,2,3} {-2,-1,0,1,2} {-3,-2,-1,0,1,2,3}
{1} {1,2} {1,2,3} {1,2,3,4}
{1} {1,2} {0,1,2,3} {-1,0,1,2,3}
{-1,0,1,2,3} {-1} {-1,2,3} {-1,1,2,3}
{0,1,2} {﹣1,0,1,2} {﹣1,0,2,3} {0,1,2,3}
{0,1} {0} {-1,2,3} {-1,0,1,2,3}
{﹣1,0,1,2} {0,1,2} {﹣1,0,1,2,3} {0,1,2,3}
{0,1} {0,1,2} {-1,0,1} {-1,0,1,2}
{﹣1,0,3} {0,1} {0,1,2} {0,2,3}
{1} {0,1} {﹣1,0,1,2} {﹣1,0,1,2,3}
{-2,-1,0,1,2,3} {-2,-1,0,1,2} {1,2,3} {1,2}
[﹣1,2] [0,1] {0,1} {﹣1,0,1,2,3}