What is the derivative of f(x) = 3x^3 + 5x + -10?
- A. 9x^3 + 5
- B. 9x^2 + 5 ✓
- C. 3x^2 + 5
- D. 9x^2
Correct answer
B. 9x^2 + 5
Explanation
Using the power rule, the derivative of 3x^3 is 9x^2, the derivative of 5x is 5, and the derivative of the constant -10 is 0. So f'(x) = 9x^2 + 5.
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