What is the derivative of f(x) = 3x^5 + 7x + 4?
- A. 15x^4 + 7 ✓
- B. 15x^4
- C. 15x^5 + 7
- D. 3x^4 + 7
Correct answer
A. 15x^4 + 7
Explanation
Using the power rule, the derivative of 3x^5 is 15x^4, the derivative of 7x is 7, and the derivative of the constant 4 is 0. So f'(x) = 15x^4 + 7.
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