设全集U={(x,y)x∈R,y∈R},集合A={(x,y)|x-2分之y-3=1},B={(x,y)|y≠x+1},求
2个回答
依题意知:A={(x,y)|y=x+1}
所以A并B=全集U,所以Cu(A并B)=空集
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