设全集I={(x,y)|x,y∈R},集合M={(x,y)|y-3/x-2=1},N={(x,y)|y≠x+1},那∁I(M∪N)= _ .
题目
设全集I={(x,y)|x,y∈R},集合M={(x,y)|
答案
∵集合M={(x,y)|
=1},
∴它表示除去一点(2,3)的直线y=x+1,
又∵N={(x,y)|y≠x+1},
∴它表示平面内直线y=x+1以外的点的集合,
∴M∪N表示平面内除去一点(2,3)以外其它所有的点的集合,
∴C
I(M∪N)={(2,3)}
故答案为:{(2,3)}.
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