已知y1=(-b/4)x-4 y2=2ax+4a+b

问题描述:

已知y1=(-b/4)x-4 y2=2ax+4a+b
ab为何值时 两函数重合

-b/4X-4=2aX+4a+b
-b=8aX^2+16aX+b
8aX^2+16ax+2b=0
8ax(X+2)+2b=0
a=0 b=0 时两函数重合