What is the derivative of f(x) = 1x^3 + 9x + 0?
- A. 3x^2
- B. 3x^2 + 9 ✓
- C. 1x^2 + 9
- D. 3x^3 + 9
Correct answer
B. 3x^2 + 9
Explanation
Using the power rule, the derivative of 1x^3 is 3x^2, the derivative of 9x is 9, and the derivative of the constant 0 is 0. So f'(x) = 3x^2 + 9.
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