Don't know the steps in finding this derivative.
But the derivative is
The answer is:
3*x x *(3 + 3*log(x))
3*x /1 2\
3*x *|- + 3*(1 + log(x)) |
\x /
3*x / 1 3 9*(1 + log(x))\
3*x *|- -- + 9*(1 + log(x)) + --------------|
| 2 x |
\ x /