Question

Найти производную
f(x)=sin(2x-п/4)

Answer 1

$f_1(x)=sin(2x- \frac{\pi}{4} )\\f(x)=sin(x)\\f'(x)=cos(x)*x'=\ \textgreater \ \\=\ \textgreater \ f_1'(x)=cos(2x-\frac{\pi}{4} )*(2x-\frac{\pi}{4} )'\\f_1'(x)=2cos(2x-\frac{\pi}{4} )$