What is the derivative of f(x) = 9x^4 + 3x + -4?
Difficulty: Medium
About this MCQ
Medium AP Exams item. Correct choice: D. 36x^3 + 3.
- A. 36x^4 + 3
Why not A: “36x^4 + 3” is not 36x^3 + 3.
- B. 9x^3 + 3
Why not B: “9x^3 + 3” is not 36x^3 + 3.
- C. 36x^3
Why not C: “36x^3” is not 36x^3 + 3.
- D. 36x^3 + 3 ✓
Correct answer
D. 36x^3 + 3
Explanation
36x^3 + 3 is the value that answers “What is the derivative of f(x) = 9x^4 + 3x + -4” (option D). Option A (36x^4 + 3) is a different value from 36x^3 + 3. Option B (9x^3 + 3) is a different value from 36x^3 + 3. Option C (36x^3) is a different value from 36x^3 + 3. Keep 36x^3 + 3 as the AP Exams fact for this stem.
Source: Original practice question, MCQsHub
Tags: Using, derivative Using, Using power, 36x^3 + 3
Submitted by: MCQsHub Editorial