设中点坐标N(x,y); P点坐标P(x0,y0),有:
2x=x0+2 ==> x0=2x-2;
2y=y0+0 ==> y0=2y;
代入椭圆方程得:
(2x-2)²/9 + (2y)²/4 =1
整理:(x-1)²/(9/4) + y² =1 即为N点轨迹
设中点坐标N(x,y); P点坐标P(x0,y0),有:
2x=x0+2 ==> x0=2x-2;
2y=y0+0 ==> y0=2y;
代入椭圆方程得:
(2x-2)²/9 + (2y)²/4 =1
整理:(x-1)²/(9/4) + y² =1 即为N点轨迹