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{1,3,2,6} {(1,3),(2,6)} M. {3,6}
(﹣2,6),x=﹣2 (2,6),x=2 (2,6),x=﹣2 (﹣2,6),x=2
={1,4,5,8}, ={2,6},则集合(∁UA.)∪B=( ) A.{1,2,5,8}B.{0,3,6} {0,2,3,6} ∅
{2} {1,2,4,6} {1,2,4} {2,6}
U~N(2,6) U~N(2,36) E(X)=2 Var(U)=2 Var(X)=1
={x|-1≤x≤2},集合 ={x|x≤a},若A.∩B.=Ø,则实数a的取值集合为( ) A.{a|a<2}B.{a|a≥-1} {a|a<-1} {a|-1≤a≤2}
(2,6) (2,7) (﹣3,2] (﹣3,2)
[-2,6] [-20,34] [-22,32] [-24,28]
[0,] [﹣2,] [0,6] [﹣2,6]
[2,6] [3,6] ∅ [﹣3,1]∪[2,6]
{2,6} {﹣2,6} {﹣2,2} {﹣2,2,6}
{x│0≤x<1} {x│0≤x<2} {x│0≤x≤1} {x│0≤x≤2}
(2,6) (2,7) (﹣3,2] (﹣3,2)
(2,6) (2,7) (﹣3,2] (﹣3,2)
={x| y=lg(x﹣1)},集合,则A.∩B等于 A. (1,2] (1,2) [1,2) [1,2]
(2,6) (2,7) (﹣3,2] (﹣3,2)