Question

26tgx-21x+п-4 производная

Answer 1

$frac{dy}{dx} = frac{d(26tg(x))}{dx} - frac{d(21x)}{dx} + frac{d(pi)}{dx} - frac{d(4)}{dx} = \ \ =26 times frac{1}{ {cos}^{2}(x) } - 21 + 0 - 0 = frac{26}{ {cos}^{2}(x) } - 21$
Готово.