If f(x) = x³ − 3x + 2, what is the value of the derivative f′(x) at x = 2?
- 9 Correct answer.
- 3
- 6
- 12
Explanation
Differentiating term by term gives f′(x) = 3x² − 3. Substituting x = 2 yields 3(4) − 3 = 9, so the slope of the curve at that point is 9.
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