What is the derivative of f(x) = 4x^5 + 6x + 9?
Difficulty: Medium
About this MCQ
Medium AP Exams item. Correct choice: D. 20x^4 + 6.
- A. 20x^4
Why not A: “20x^4” is not 20x^4 + 6.
- B. 4x^4 + 6
Why not B: “4x^4 + 6” is not 20x^4 + 6.
- C. 20x^5 + 6
Why not C: “20x^5 + 6” is not 20x^4 + 6.
- D. 20x^4 + 6 ✓
Correct answer
D. 20x^4 + 6
Explanation
20x^4 + 6 is the value that answers “What is the derivative of f(x) = 4x^5 + 6x + 9” (option D). Option A (20x^4) is a different value from 20x^4 + 6. Option B (4x^4 + 6) is a different value from 20x^4 + 6. Option C (20x^5 + 6) is a different value from 20x^4 + 6. Keep 20x^4 + 6 as the AP Exams fact for this stem.
Source: Original practice question, MCQsHub
Tags: Using, derivative Using, Using power, 20x^4 + 6
Submitted by: MCQsHub Editorial