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{0} {0,﹣2} {﹣2,0,2} {0,2}
{﹣2,﹣1,0,1,2} {﹣1,0,1,2} {﹣1,0,1,2,3} {﹣2,﹣1,0,1,2,3}
{﹣2,O} {0,2} (﹣1,2) (﹣2,﹣1)
={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}
M.={-2,0,2},P.={-4,0,4},f:M.中数的平方 M.={0,1},P.={-1,0,1},f:M.中数的平方根 M.=Z.,P.=Q.,f:M.中数的倒数 M.=R.,P.={x|x>0},f:M.中数的平方
{0} {0,2} {-2,0} {-2,0,2}
{﹣2,0} {﹣2,0,2} {﹣1,1,2} {﹣1,0,2}
={x|0<x<2}, ={x||x|≤1},则集合A.∩B.=( ) A.(0,1)B.(0,1] (1,2) [1,2)
{0} {2} {﹣1,0,1} {﹣2,0,2}
={-2,0,2}, ={x|x2-x-2=0},则A.∩B.=( ) A.∅ B.{2} {0} {-2}
到集合 的映射,若A.={-2,0,2},则A.∩B.=( ) A.{0}B.{2} {0,2} {-2,0}
={-2,0,2}, ={x|x2-x-2=0},则A.∩B.=( ) A.∅ B.{2} {0} {-2}
{x│0≤x<1} {x│0≤x<2} {x│0≤x≤1} {x│0≤x≤2}
{0,2} {﹣2,4} [0,2] {﹣2,0,2,4}
{0} {0,﹣2} {﹣2,0,2} {0,2}
={2,3},集合 ={0,1},则A.∪B.等于( ) A.∅ B.{1,2,3} {0,1,2} {0,1,2,3}