Don't know the steps in finding this derivative.
But the derivative is
Now simplify:
The answer is:
log(x) - 1 /log(x) - 1 log(x)\
x *|---------- + ------|
\ x x /
-1 + log(x) / 2 \
x *\3 + (-1 + 2*log(x)) - 2*log(x)/
----------------------------------------------
2
x
-1 + log(x) / 3 \
x *\-8 + (-1 + 2*log(x)) + 4*log(x) - 3*(-1 + 2*log(x))*(-3 + 2*log(x))/
-----------------------------------------------------------------------------------
3
x