圆C(x-1)²+y=4,求(x+2)²+(y+2)²及(y+2)/(x+2)的最大值
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圆C(x-1)²+y=4,求(x+2)²+(y+2)²及(y+2)/(x+2)的最大值
圆C(x-1)²+y=4,求(x+2)²+(y+2)²及(y+2)/(x+2)的最大值
圆C(x-1)²+y=4,求(x+2)²+(y+2)²及(y+2)/(x+2)的最大值
1. (x+2)^2+(y+2)^2的最大值就是求点(-2,-2)到圆C上一点距离的最大值,显然=该点到圆心(1,0)的距离+圆的半径
2.(y+2)/(x+2)的最大值就是圆上一点与(-2,-2)连线的斜率最大值,显然相切时最大