What is the derivative of f(x) = 1x^5 + 4x + -7?
- A. 5x^4 + 4 ✓
- B. 5x^5 + 4
- C. 5x^4
- D. 1x^4 + 4
Correct answer
A. 5x^4 + 4
Explanation
Using the power rule, the derivative of 1x^5 is 5x^4, the derivative of 4x is 4, and the derivative of the constant -7 is 0. So f'(x) = 5x^4 + 4.
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