(1)设斜率为2的弦的两端点分别为A(X1,Y1),B(X2,Y2),弦的中点M(x,y)
3x12-y12=3 (1)
3x22-y22=3 (2)
(1)-(2)得:
3(x12-x22)-(y12-y22)=0
(y1-y2)/(x1-x2)=3(x1+x2)/(y1+y2)
2=3*2x/2y
y=3/2 *x (-1
(1)设斜率为2的弦的两端点分别为A(X1,Y1),B(X2,Y2),弦的中点M(x,y)
3x12-y12=3 (1)
3x22-y22=3 (2)
(1)-(2)得:
3(x12-x22)-(y12-y22)=0
(y1-y2)/(x1-x2)=3(x1+x2)/(y1+y2)
2=3*2x/2y
y=3/2 *x (-1