y'=((ln x-1)x)'=(ln x-1)(x)'+(ln x-1)'x=(ln x-1)*1+((ln x)'-(1)')x=
=ln x -1 +(1/x-0)x=ln x -1+1/x*X=ln x -1 +1=ln x
y'=((ln x-1)x)'=(ln x-1)(x)'+(ln x-1)'x=(ln x-1)*1+((ln x)'-(1)')x=
=ln x -1 +(1/x-0)x=ln x -1+1/x*X=ln x -1 +1=ln x