Question

What is the instantaneous rate of change of `f(x)=-2x^3-8x^2-x` at `x=2`?

Answer 1

`-57`

Explanation:

`f'(x)=-6x^2-16x-1`

`f'(2)=-6(2)^2-16(2)-1`

`=-24-32-1`

`=-57`