(1)
M(5/2,3/2)
CM^2=(3-5/2)^2+(4-3/2)^2
CM=√26/2
(2)
(AP/AB)^2=△APQ:△ABC=4/(4+5)
AP/AB=2/3,
设P(x,y)
貌似是AP的横坐标比上AB的横坐标为2/3
(x-1)/(4-1)=2/3,x=3
貌似是AP的纵坐标比上AB的纵坐标为2/3
(y-2)/(1-2)=2/3,Y=4/3
P(3,4/3)
我也在做这题,应该是这样的
(1)
M(5/2,3/2)
CM^2=(3-5/2)^2+(4-3/2)^2
CM=√26/2
(2)
(AP/AB)^2=△APQ:△ABC=4/(4+5)
AP/AB=2/3,
设P(x,y)
貌似是AP的横坐标比上AB的横坐标为2/3
(x-1)/(4-1)=2/3,x=3
貌似是AP的纵坐标比上AB的纵坐标为2/3
(y-2)/(1-2)=2/3,Y=4/3
P(3,4/3)
我也在做这题,应该是这样的