题目内容
设全集U={(x,y)|x,y∈R},M={(x,y)|=1},N={(x,y)|y≠x+1},那么(CUM)∩(CUN)=
[ ]
A.
φ
B.
{(2,3)}
C.
(2,3)
D.
{(x,y)|y≠x+1}
答案:B
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题目内容
设全集U={(x,y)|x,y∈R},M={(x,y)|=1},N={(x,y)|y≠x+1},那么(CUM)∩(CUN)=
φ
{(2,3)}
(2,3)
{(x,y)|y≠x+1}