Differentiate the following functions with respect to x :

$x^{4} - 2 s i n x + 3 c o s x$

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Solution

We have to differentiate f(x) with respect to x

$\frac{d}{d x} (x^{4} - 2 s i n x + 3 c o s x)$

$= \frac{d (x)^{4}}{d x} - 2 \frac{d}{d x} (s i n x) + 3 \frac{d}{d x} (c o s x)$

$= 4 x^{3} - 2 c o s x - 3 s i n x$

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