What is the derivative of f(x) = 5x^4 + 7x + 3?
Difficulty: Medium
About this MCQ
Medium AP Exams item. Correct choice: B. 20x^3 + 7.
- A. 20x^4 + 7
Why not A: “20x^4 + 7” is not 20x^3 + 7.
- B. 20x^3 + 7 ✓
- C. 20x^3
Why not C: “20x^3” is not 20x^3 + 7.
- D. 5x^3 + 7
Why not D: “5x^3 + 7” is not 20x^3 + 7.
Correct answer
B. 20x^3 + 7
Explanation
20x^3 + 7 is the value that answers “What is the derivative of f(x) = 5x^4 + 7x + 3” (option B). Option A (20x^4 + 7) is a different value from 20x^3 + 7. Option C (20x^3) is a different value from 20x^3 + 7. Option D (5x^3 + 7) is a different value from 20x^3 + 7. Keep 20x^3 + 7 as the AP Exams fact for this stem.
Source: Original practice question, MCQsHub
Tags: Using, derivative Using, Using power, 20x^3 + 7
Submitted by: MCQsHub Editorial