y=2x-5/x-1(x属于R,且x≠1）的反函数怎么求

化分母,y=[2(x-1)-3]/(x-1) y=2-[3/(x-1)] 3/(x-1)=2-y x-1= 3/2-y x=3/2-y + 1 x=(5-y)/(2-y)