What is the derivative of f(x) = 3x^3 + 3x + -8?
Difficulty: Medium
About this MCQ
Medium AP Exams item. Correct choice: D. 9x^2 + 3.
- A. 9x^3 + 3
Why not A: “9x^3 + 3” is not 9x^2 + 3.
- B. 9x^2
Why not B: “9x^2” is not 9x^2 + 3.
- C. 3x^2 + 3
Why not C: “3x^2 + 3” is not 9x^2 + 3.
- D. 9x^2 + 3 ✓
Correct answer
D. 9x^2 + 3
Explanation
9x^2 + 3 is the value that answers “What is the derivative of f(x) = 3x^3 + 3x + -8” (option D). Option A (9x^3 + 3) is a different value from 9x^2 + 3. Option B (9x^2) is a different value from 9x^2 + 3. Option C (3x^2 + 3) is a different value from 9x^2 + 3. Keep 9x^2 + 3 as the AP Exams fact for this stem.
Source: Original practice question, MCQsHub
Tags: Using, derivative Using, Using power, 9x^2 + 3
Submitted by: MCQsHub Editorial