Question

Y= x^2 -7x y/=? производная помогите

Answer 1

$y= x^{2} -7x \\ y'=2x^{2-1}-7=2x-7$

Answer 2

Y = x² - 7x
y' = 2x - 7

(Cx^k)' = Ckx^(k-1), k≠-1