What is the derivative of f(x) = 7x^5 + 9x + -2?
- A. 7x^4 + 9
- B. 35x^4
- C. 35x^4 + 9 ✓
- D. 35x^5 + 9
Correct answer
C. 35x^4 + 9
Explanation
Using the power rule, the derivative of 7x^5 is 35x^4, the derivative of 9x is 9, and the derivative of the constant -2 is 0. So f'(x) = 35x^4 + 9.
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