If $f(x) = 4e^x \cos(x)$, find $f'(x)$ and $f''(x)$. $f'(x) =$ $f''(x) = $
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The product rule states that if we have two functions u(x) and v(x), then the derivative of their product is u'(x)v(x) + u(x)v'(x). Show more…
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