What is the derivative of f(x) = 2x^5 + 8x + -8?
- A. 10x^5 + 8
- B. 10x^4 + 8 ✓
- C. 2x^4 + 8
- D. 10x^4
Correct answer
B. 10x^4 + 8
Explanation
Using the power rule, the derivative of 2x^5 is 10x^4, the derivative of 8x is 8, and the derivative of the constant -8 is 0. So f'(x) = 10x^4 + 8.