What is the derivative of f(x) = 5x^3 + 4x + -4?
Difficulty: Medium
About this MCQ
Medium AP Exams item. Correct choice: B. 15x^2 + 4.
- A. 5x^2 + 4
Why not A: “5x^2 + 4” is not 15x^2 + 4.
- B. 15x^2 + 4 ✓
- C. 15x^3 + 4
Why not C: “15x^3 + 4” is not 15x^2 + 4.
- D. 15x^2
Why not D: “15x^2” is not 15x^2 + 4.
Correct answer
B. 15x^2 + 4
Explanation
15x^2 + 4 is the value that answers “What is the derivative of f(x) = 5x^3 + 4x + -4” (option B). Option A (5x^2 + 4) is a different value from 15x^2 + 4. Option C (15x^3 + 4) is a different value from 15x^2 + 4. Option D (15x^2) is a different value from 15x^2 + 4. Keep 15x^2 + 4 as the AP Exams fact for this stem.
Source: Original practice question, MCQsHub
Tags: Using, derivative Using, Using power, 15x^2 + 4
Submitted by: MCQsHub Editorial