0,5cos(3x-pi/6)
/ pi\ cos|3*x - --| \ 6 / ------------- 2
/ / pi\\ |cos|3*x - --|| d | \ 6 /| --|-------------| dx\ 2 /
The derivative of a constant times a function is the constant times the derivative of the function.
Let .
The derivative of cosine is negative sine:
Then, apply the chain rule. Multiply by :
Differentiate term by term:
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 derivative of the constant is zero.
The result is:
The result of the chain rule is:
So, the result is:
Now simplify:
The answer is:
/ pi\ -3*sin|3*x - --| \ 6 / ---------------- 2
/ pi\ -9*sin|3*x + --| \ 3 / ---------------- 2
/ pi\ -27*cos|3*x + --| \ 3 / ----------------- 2