What is the derivative of f(x) = 5x^5 + 8x + 7?
- A. 25x^5 + 8
- B. 5x^4 + 8
- C. 25x^4 + 8 ✓
- D. 25x^4
Correct answer
C. 25x^4 + 8
Explanation
Using the power rule, the derivative of 5x^5 is 25x^4, the derivative of 8x is 8, and the derivative of the constant 7 is 0. So f'(x) = 25x^4 + 8.
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