What is the derivative of f(x) = 9x^2 + 9x + -5?
Difficulty: Medium
About this MCQ
Medium AP Exams item. Correct choice: A. 18x + 9.
- A. 18x + 9 ✓
- B. 18x^1
Why not B: “18x^1” is not 18x + 9.
- C. 9x^1 + 9
Why not C: “9x^1 + 9” is not 18x + 9.
- D. 18x^2 + 9
Why not D: “18x^2 + 9” is not 18x + 9.
Correct answer
A. 18x + 9
Explanation
18x + 9 is the value that answers “What is the derivative of f(x) = 9x^2 + 9x + -5” (option A). Option B (18x^1) is a different value from 18x + 9. Option C (9x^1 + 9) is a different value from 18x + 9. Option D (18x^2 + 9) is a different value from 18x + 9. Keep 18x + 9 as the AP Exams fact for this stem.
Source: Original practice question, MCQsHub
Tags: AP Calculus, Derivatives, derivative MCQ, derivative calculation MCQ, find derivative MCQ, derivative questions, calculus MCQs
Submitted by: MCQsHub Editorial