What is the derivative of f(x) = 1x^4 + 2x + -4?
- A. 4x^3
- B. 4x^4 + 2
- C. 1x^3 + 2
- D. 4x^3 + 2 ✓
Correct answer
D. 4x^3 + 2
Explanation
Using the power rule, the derivative of 1x^4 is 4x^3, the derivative of 2x is 2, and the derivative of the constant -4 is 0. So f'(x) = 4x^3 + 2.