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
|,则点P的坐标为______. PB
答
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)=−
(4-x,-3-y)3 2
解得点P的坐标(8,-15)
故答案为(8,-15)