Question

PLEASE HELP!! If f (x) = x^3 - x^2 + x - 1, then f’(2) =

Answer 1

Answer: B) 9

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Work Shown:

f(x) = x^3 - x^2 + x - 1

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

f ' (2) = 3(2)^2 - 2(2) + 1

f ' (2) = 9

In step 2, I used the power rule $\frac{d}{dx}x^n = nx^{n-1}$