What is the derivative of f(x) = 2x^4 + 1x + -2?
- A. 8x^3 + 1 ✓
- B. 2x^3 + 1
- C. 8x^4 + 1
- D. 8x^3
Correct answer
A. 8x^3 + 1
Explanation
Using the power rule, the derivative of 2x^4 is 8x^3, the derivative of 1x is 1, and the derivative of the constant -2 is 0. So f'(x) = 8x^3 + 1.
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