Question

Производная триг функции

Answer 1

$y = cos(2x+ frac{ pi}{2}) +frac{x- pi^2}{x}=-sin2x+1- frac{pi^2}{x} \ y'=-2cos2x+frac{pi^2}{x^2} \ y'( frac{ pi}{12})=-2cosfrac{ pi}{6}+ frac{pi^2}{frac{ pi^2}{144}}=144- sqrt{3}$