What is the derivative of f(x) = 4x^4 + 2x + -8?
- A. 16x^3 + 2 ✓
- B. 16x^4 + 2
- C. 4x^3 + 2
- D. 16x^3
Correct answer
A. 16x^3 + 2
Explanation
Using the power rule, the derivative of 4x^4 is 16x^3, the derivative of 2x is 2, and the derivative of the constant -8 is 0. So f'(x) = 16x^3 + 2.
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