B(5,4) C(3,8)
把BC等分四段,分点是(4.5,5),(4,6),(3.5,7)
L有两条,方程为:
①.(x-1)/(y-1)=(4.5-1)/(5-1).
即:8x-7y-1=0.
或者:②.(x-1)/(y-1)=(3.5-1)/(7-1).
即:12x-5y-7=0.
B(5,4) C(3,8)
把BC等分四段,分点是(4.5,5),(4,6),(3.5,7)
L有两条,方程为:
①.(x-1)/(y-1)=(4.5-1)/(5-1).
即:8x-7y-1=0.
或者:②.(x-1)/(y-1)=(3.5-1)/(7-1).
即:12x-5y-7=0.