`f(x) = x^4 + 2x^3 - 3x^2 - x` Find the second derivative of the function.

Expert Answers
hkj1385 eNotes educator| Certified Educator

Note:- If y = x^n ; where n = constant ; then dy/dx = n*x^(n-1)

If y = k ; where k = constant ; then dy/dx = 0

Now, 

`f(x) = x^4 + 2x^3 - 3x^2 - x`

`f'(x) = 4x^3 + 6x^2 - 6x - 1`

`f''(x) = 12x^2 + 12x - 6`

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