$f(x) = -x \sin x \cos x$

A cura di: Administrator

$f(x) = -x sin x cos x$
$f'(x) = – sin x cos x – x cos x cos x – x sin x (-sin x) = $ $-sin x cos x -x (cos^2 x – sin^2 x) =$ $sin x cos x -x cos 2x$