x^2+(y-1)^2=1描述的是在该方程所表示的圆上的点.对y/x-3+c>=0分两种.①y>=0时,c>=3-x,则c>=3;②y<=0时,c<=3-x,则c<=0.综上所述,则c的取值范围是c>=3和c<=0.
设实数XY满足x^2+(y-1)^2=1若对满足条件xy不等式y/x-3+c大于等于0恒成立,则c的取值范围
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