5 5 sin (x) + cos (x)
d / 5 5 \ --\sin (x) + cos (x)/ dx
Differentiate term by term:
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:
Let .
Apply the power rule: goes to
Then, apply the chain rule. Multiply by :
The derivative of cosine is negative sine:
The result of the chain rule is:
The result is:
Now simplify:
The answer is:
4 4 - 5*cos (x)*sin(x) + 5*sin (x)*cos(x)
/ 5 5 2 3 3 2 \ 5*\- cos (x) - sin (x) + 4*cos (x)*sin (x) + 4*cos (x)*sin (x)/
/ 3 3 2 2 \ 5*\- 13*sin (x) + 13*cos (x) - 12*sin (x)*cos(x) + 12*cos (x)*sin(x)/*cos(x)*sin(x)