Derivative help!!!!!!!?

Question

primes denote derivatives with respect to x

1)y=x-lnx 2)y=1/x - lnx

y'=? y'=?

Y''=? y"=?

Answer 1

1)

      y = x - lnx

     y'    =  1 - 1/x

     y"   =   -(-1/x^2)  =  1/x^2

2)

   y  =   1/x  - lnx

   y'   =  -1/x^2  -  1/x

   y"  =  2/x^3  +  1/x^2