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 :
Let .
The derivative of sine is cosine:
Then, apply the chain rule. Multiply by :
The derivative of a constant times a function is the constant times the derivative of the function.
Apply the power rule: goes to
So, the result is:
The result of the chain rule is:
The result of the chain rule is:
So, the result is:
Now simplify:
The answer is:
/ 2/x\ 2/x\\ /x\ /x\ -|- 3*cos |-| + 5*sin |-||*cos|-|*sin|-| \ \4/ \4// \4/ \4/ ----------------------------------------- 2