What is the derivative of f(x) = 3x^5 + 9x + -6?
Difficulty: Medium
About this MCQ
Medium AP Exams item. Correct choice: C. 15x^4 + 9.
- A. 15x^4
Why not A: “15x^4” is not 15x^4 + 9.
- B. 3x^4 + 9
Why not B: “3x^4 + 9” is not 15x^4 + 9.
- C. 15x^4 + 9 ✓
- D. 15x^5 + 9
Why not D: “15x^5 + 9” is not 15x^4 + 9.
Correct answer
C. 15x^4 + 9
Explanation
15x^4 + 9 is the value that answers “What is the derivative of f(x) = 3x^5 + 9x + -6” (option C). Option A (15x^4) is a different value from 15x^4 + 9. Option B (3x^4 + 9) is a different value from 15x^4 + 9. Option D (15x^5 + 9) is a different value from 15x^4 + 9. Keep 15x^4 + 9 as the AP Exams fact for this stem.
Source: Original practice question, MCQsHub
Tags: Derivatives, derivative MCQ, derivative calculation MCQ, differentiation MCQ, find derivative MCQ, derivative questions
Submitted by: MCQsHub Editorial