Chain Rule With a Cosine Function
What is the derivative of the function $$f(x)=\cos(2*x)$$?
A
The derivative is $$\sin(2*x)$$.
B
The derivative is $$-\sin(2*x)$$, neglecting the derivative of the inner function.
C
The derivative is $$-2*\sin(2*x)$$.
D
The derivative is $$-2*\cos(2*x)$$.
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