已知M（-2,0）、N（2,0）,则以MN为斜边的直角三角形的直角顶点P的轨迹方程是
人气：360 ℃ 时间：2019-12-15 12:10:37
解答
设P点的坐标为（x,y）,（X+2）平方+2Y平方+（X-2）平方=16
但是要去掉 m n 两点
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