/ 2 \
sin\n *x/
---------
2
sin(n^2*x)/2
The derivative of a constant times a function is the constant times the derivative of the function.
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:
So, the result is:
Now simplify:
The answer is:
2 / 2 \
n *cos\n *x/
------------
2
4 / 2\
-n *sin\x*n /
--------------
2