问题
填空题
已知A(-4,3),B(5,12),若
|
答案
设P(x,y)
∵A(-4,3),B(5,12),
∴
=(x+4,y-3),AP
=(5-x,12-y)PB
∵
=2AP
,PB
∴x+4=2(5-x)
y-3=2(12-y)
∴x=2,y=9,
∴点P的坐标是(2,9)
故答案为:(2,9)
已知A(-4,3),B(5,12),若
|
设P(x,y)
∵A(-4,3),B(5,12),
∴
=(x+4,y-3),AP
=(5-x,12-y)PB
∵
=2AP
,PB
∴x+4=2(5-x)
y-3=2(12-y)
∴x=2,y=9,
∴点P的坐标是(2,9)
故答案为:(2,9)