/ 3\ sin\2*x /
d / / 3\\ --\sin\2*x // dx
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 answer is:
/ 3 / 3\ / 3\\ 12*x*\- 3*x *sin\2*x / + cos\2*x //
/ 3 / 3\ 6 / 3\ / 3\\ 12*\- 18*x *sin\2*x / - 18*x *cos\2*x / + cos\2*x //