Let .
Then, apply the chain rule. Multiply by :
Apply the power rule: goes to
The result of the chain rule is:
The answer is:
___
\/ x
(tan(2)) *(pi*I + log(-tan(2)))
-----------------------------------
___
2*\/ x
___
\/ x / 1 pi*I + log(-tan(2))\
(tan(2)) *|- ---- + -------------------|*(pi*I + log(-tan(2)))
| 3/2 x |
\ x /
------------------------------------------------------------------
4
___ / 2 \
\/ x | 3 (pi*I + log(-tan(2))) 3*(pi*I + log(-tan(2)))|
(tan(2)) *(pi*I + log(-tan(2)))*|---- + ---------------------- - -----------------------|
| 5/2 3/2 2 |
\x x x /
---------------------------------------------------------------------------------------------
8