What is the derivative of f(x) = 2x^3 + 5x + 9?
Difficulty: Medium
About this MCQ
Medium AP Exams item. Correct choice: B. 6x^2 + 5.
- A. 6x^2
Why not A: “6x^2” is not 6x^2 + 5.
- B. 6x^2 + 5 ✓
- C. 6x^3 + 5
Why not C: “6x^3 + 5” is not 6x^2 + 5.
- D. 2x^2 + 5
Why not D: “2x^2 + 5” is not 6x^2 + 5.
Correct answer
B. 6x^2 + 5
Explanation
6x^2 + 5 is the value that answers “What is the derivative of f(x) = 2x^3 + 5x + 9” (option B). Option A (6x^2) is a different value from 6x^2 + 5. Option C (6x^3 + 5) is a different value from 6x^2 + 5. Option D (2x^2 + 5) is a different value from 6x^2 + 5. Keep 6x^2 + 5 as the AP Exams fact for this stem.
Source: Original practice question, MCQsHub
Tags: Using, derivative Using, Using power, 6x^2 + 5
Submitted by: MCQsHub Editorial