Let .
Apply the power rule: goes to
Then, apply the chain rule. Multiply by :
The derivative of sine is cosine:
The result of the chain rule is:
The answer is:
-cos(x) -------- 2 sin (x)
2
2*cos (x)
1 + ---------
2
sin (x)
-------------
sin(x)
/ 2 \
| 6*cos (x)|
-|5 + ---------|*cos(x)
| 2 |
\ sin (x) /
------------------------
2
sin (x)