What is the derivative of f(x) = 3x^3 + 3x + -8?
- A. 9x^3 + 3
- B. 9x^2
- C. 3x^2 + 3
- D. 9x^2 + 3 ✓
Correct answer
D. 9x^2 + 3
Explanation
Using the power rule, the derivative of 3x^3 is 9x^2, the derivative of 3x is 3, and the derivative of the constant -8 is 0. So f'(x) = 9x^2 + 3.
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