What is the derivative of f(x) = 1x^4 + 7x + 1?
- A. 4x^3
- B. 1x^3 + 7
- C. 4x^4 + 7
- D. 4x^3 + 7 ✓
Correct answer
D. 4x^3 + 7
Explanation
Using the power rule, the derivative of 1x^4 is 4x^3, the derivative of 7x is 7, and the derivative of the constant 1 is 0. So f'(x) = 4x^3 + 7.
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