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