Question

Найти производную функции
y=x^3-1/5x^2+2tg3x

Answer 1

$y = 3 {x}^{2} - 3x + 6 frac{1}{? { cos}^{2} x}$

Answer 2

y'= 3x^2 -2x/5+2*3/cos^2 3x =3x^2 -2x/5+6/cos^2 3x