F(x)=x^4-4x Найти: f'(x);f'(2); f'(-1)-?

Question

F(x)=x^4-4x
Найти:
f'(x);f'(2); f'(-1)-?

Answer 1

Производная = 4х³-4
f ¹(2) = 4*2³-4 = 4*8-4=32-4=28
f¹(-1) = 4*(-1)³ - 4 = -4-4 = -8