Question

Найдите значение , если f(x) = 4x3 – 2x - 40

Answer 1

F'(X) = 12X^2 - 2

12X^2 - 2 = 0

2(6X^2 - 1) = 0

6X^2 = 1

X^2 = 16

X = V (16)

F(X) = 4X^3 - 2X - 40 = 154 - 13 - 40 = 154 - 1854 - 40 = - 1754 - 40 = - 40 1754