已知A(2,3),B(4,-3),点P在线段AB的延长线上,且|AP|=3/2|PB|,则点P的坐标为_.

问题描述:

已知A(2,3),B(4,-3),点P在线段AB的延长线上,且|

AP
|=
3
2
|
PB
|,则点P的坐标为______.

设点P(x,y),
∵点P在线段AB的延长线上,且|

AP
|=
3
2
|
PB
|
AP 
=−
3
2
PB

即(x-2,y-3)=
3
2
(4-x,-3-y)
解得点P的坐标(8,-15)
故答案为(8,-15)