The derivative of a constant times a function is the constant times the derivative of the function.
Let .
Apply the power rule: goes to
Then, apply the chain rule. Multiply by :
Rewrite the function to be differentiated:
Apply the quotient rule, which is:
and .
To find :
The derivative of sine is cosine:
To find :
The derivative of cosine is negative sine:
Now plug in to the quotient rule:
The result of the chain rule is:
So, the result is:
Now simplify:
The answer is:
3 / 2 \ tan (x)*\4 + 4*tan (x)/ ----------------------- 4
2 / 2 \ / 2 \ tan (x)*\1 + tan (x)/*\3 + 5*tan (x)/
/ 2 \ / 2 \ | 4 / 2 \ 2 / 2 \| 2*\1 + tan (x)/*\2*tan (x) + 3*\1 + tan (x)/ + 10*tan (x)*\1 + tan (x)//*tan(x)