题目内容
命题P:若(x-1)2+(y-2)2=0,则x=1且y=2,则命题P的否命题为( )A.若(x-1)2+(y-2)2≠0,则x≠1且y≠2
B.若(x-1)2+(y-2)2=0,则x≠1且y≠2
C.若(x-1)2+(y-2)2≠0,则x≠1或y≠2
D.若(x-1)2+(y-2)2=0,则x≠1或y≠2
C
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题目内容
命题P:若(x-1)2+(y-2)2=0,则x=1且y=2,则命题P的否命题为( )A.若(x-1)2+(y-2)2≠0,则x≠1且y≠2
B.若(x-1)2+(y-2)2=0,则x≠1且y≠2
C.若(x-1)2+(y-2)2≠0,则x≠1或y≠2
D.若(x-1)2+(y-2)2=0,则x≠1或y≠2
C