Chain Rule with a Trigonometric Function
Let $$f$$ be the function defined by $$ f(x) = \sin(x^2 + \pi) $$. What is the value of $$ f'(\sqrt{2\pi}) $$?
A
$$ \cos(2\sqrt{2\pi}) $$
B
$$ -1 $$
C
$$ -2\sqrt{2\pi} $$
D
$$ -2 $$
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