Question

設(shè)全集I={(x,y)|x、y∈R},集合M={(x,y)|=1},N={(x,y)|y≠x+1},那么(M)∩(N)等于(    )

A.{(2,3)}           B.(2,3)                C.            D.{(x,y)|y≠x+1}

Answer 1

A

解析：∵M(jìn)={(x,y)|y=x+1,x≠2},N={(x,y)|y≠x+1},

∴M={(x,y)|y≠x+1,或(2,3)},N={(x,y)|y=x+1},則(M)∩(N)={(2,3)}.