How do you find the derivative of $2 sin x + sin 2 x$ $2 sin x + sin 2x$ ?

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Answer 1 · 2015-11-13T02:24:39

By using $d sin u = d u cos u$ $dsinu=ducosu$

Take the derivative of each separate term.
$f (x) = 2 sin x + sin 2 x$ $f(x) = 2sinx + sin2x$
$f'(x) = 2cosx + 2cos2x$

How do you find the derivative of 2 sin x + sin 2x2sinx+sin2x2 sin x + sin 2x?