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