What is the derivative of f(x) = 7x^3 + 3x + -10?
Difficulty: Medium
About this MCQ
Medium AP Exams item. Correct choice: D. 21x^2 + 3.
- A. 21x^3 + 3
Why not A: “21x^3 + 3” is not 21x^2 + 3.
- B. 7x^2 + 3
Why not B: “7x^2 + 3” is not 21x^2 + 3.
- C. 21x^2
Why not C: “21x^2” is not 21x^2 + 3.
- D. 21x^2 + 3 ✓
Correct answer
D. 21x^2 + 3
Explanation
21x^2 + 3 is the value that answers “What is the derivative of f(x) = 7x^3 + 3x + -10” (option D). Option A (21x^3 + 3) is a different value from 21x^2 + 3. Option B (7x^2 + 3) is a different value from 21x^2 + 3. Option C (21x^2) is a different value from 21x^2 + 3. Keep 21x^2 + 3 as the AP Exams fact for this stem.
Source: Original practice question, MCQsHub
Tags: Using, derivative Using, Using power, 21x^2 + 3
Submitted by: MCQsHub Editorial