Question

若y=2x+m和y=x/m-1+3图像交点的横坐标为1,求m的值

Answer 1

x = 1,2x+m = x/(m-1)+3 (m0)

2+m = 1/(m-1)+3

(m-1)*(m+2) = 1+3*(m-1)

m^2-2m = 0

m 0 => m=2

m=2