Let .
Apply the power rule: goes to
Then, apply the chain rule. Multiply by :
Let .
The derivative of sine is cosine:
Then, apply the chain rule. Multiply by :
Apply the power rule: goes to
The result of the chain rule is:
The result of the chain rule is:
Now simplify:
The answer is:
4 / 5\ / 5\ 10*x *cos\x /*sin\x /
3 / 5 2/ 5\ / 5\ / 5\ 5 2/ 5\\ 10*x *\- 5*x *sin \x / + 4*cos\x /*sin\x / + 5*x *cos \x //
2 / 5 2/ 5\ / 5\ / 5\ 5 2/ 5\ 10 / 5\ / 5\\ 40*x *\- 15*x *sin \x / + 3*cos\x /*sin\x / + 15*x *cos \x / - 25*x *cos\x /*sin\x //