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