摘要:1.设集合. .那么P的充要条件是 ( ) A. >-1且<5 B. <-1且<5 C. >-1且>5 D. <-1且>5
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设集合u={(x,y)|x∈R,y∈R},A={(x,y)|2x-y+m>0|},B={(x,y)|x+y-n≤0},那么点P(2,3)∈A∩(CuB)的充要条件是________.
设集合U={(x,y)|x∈R,y∈R},A={(x,y)|2x-y+m>0},B={(x,y)|x+y-n≤0},那么点P(2,3)∈A∩(CUB)的充要条件是
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A.
m>-1且n<5
B.
m<-1且n<5
C.
m>-1且n>5
D.
m<-1且n>5