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{x|-2≤x<1} {x|1<x≤2} {x|-2≤x≤2} {x|x<2}
{﹣3,﹣1} {﹣3,﹣1,3} {1,3} {﹣1,1}
={x∈N.|x2≥5},则∁UA=( ) A.∅ {2} {5} {2,5}
(﹣∞,0) (﹣∞,1) [1,+∞) (1,3]
={x|1〈x〈4},集合 ={x|2≤x〈5},则A.∩(UB)=( ) A.{x|1≤x〈2} B.{x|1〈x〈2} {x|x〈2} {x|x≥5}
={1,3}, ={3,5},则∁U.(A.∪B.)等于( ) A.{1,4}B.{2,4} {2,5} {1,5}
(﹣5,1] [1,3) [﹣7,3) (﹣5,3)
={1,3}, ={3,5},则CU(A.∪B.)等于( ). A.{1,4} B.{1,5} {2,5} {2,4}
={x∈N|x≥},则∁UA=( ) A.∅ {2} {5} {2,5}
={x|x2−4x+3=0}, ={y|y=−x2+2x+2,x∈R.},全集U.=R.,则A.∩(∁U.B.)=( ) A.Æ B.[1,3] {3} {1,3}
={(x,y)|2x-y+m>0}, ={(x,y)|x+y-n≤0},若点P.(2,3)∈A.∩(∁UB),则下列选项正确的是( ) A.m>-1,n<5 B.m<-1,n<5 m>-1,n>5 m<-1,n>5
{1,3,5,6,7,8} {2,4,5,6,7,8} {5,6,7,8} {1,2,3,4}
{ x | - 2 ≤x < 1} { x | 0 < x ≤1} { x | - 1 ≤x ≤1} { x | x < 1}
={1,3,7}, ={x|x=log2(a+1),a∈A.},则(∁U.A.)∩( (∁U.B.)=( ) A.{1,3}B.{5,6} {4,5,6} {4,5,6,7}