engineering mathematics MCQ #707

If y = x³ + 2x² - x + 1, then d²y/dx² = ?

engineering mathematics MCQ #707

  1. Question 1

    Q1. If y = x³ + 2x² - x + 1, then d²y/dx² = ?

    • A) 6x + 4
    • B) 6x - 4
    • C) 3x² + 4x - 1
    • D) 3x² - 4x + 1

    Answer: 6x + 4

    Explanation: First, find dy/dx = 3x² + 4x - 1, then d²y/dx² = 6x + 4, differentiating again.