f(x)=6(x^4-x^3)+2x naydite f ' (-1) ???
f(x)=6(x^4-x^3)+2x f(x)=6x^4-6x^3+2x f'(x)=24x^3-18x^2+2 f'(-1)=-24-18+2=-24-16=-40
Ответ: -40