What is the derivative of f(x) = 2x^3 + 7x + -1?
- A. 2x^2 + 7
- B. 6x^2
- C. 6x^3 + 7
- D. 6x^2 + 7 ✓
Correct answer
D. 6x^2 + 7
Explanation
Using the power rule, the derivative of 2x^3 is 6x^2, the derivative of 7x is 7, and the derivative of the constant -1 is 0. So f'(x) = 6x^2 + 7.