已知命题p:点A(x,y)在圆(x-1)2+(y-1)2=1外,若命题p是假命题,则z=x+y的最小值为 ___ .
人气:274 ℃ 时间:2020-07-23 06:05:38
解答
∵命题p:点A(x,y)在圆(x-1)2+(y-1)2=1外,且命题p是假命题,∴点A(x,y)在圆(x-1)2+(y-1)2=1内或点A(x,y)在圆(x-1)2+(y-1)2=1上,如图,斜率为-1的切线m,n与圆有两个切点,其中m与圆的切点使...
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