engineering mathematics MCQ #665

If y = x³ + 2x² - 5x + 1, then dy/dx = ?

engineering mathematics MCQ #665

  1. Question 1

    Q1. If y = x³ + 2x² - 5x + 1, then dy/dx = ?

    • A) 3x² + 4x - 5
    • B) 3x² + 2x - 5
    • C) x² + 4x - 5
    • D) 3x² - 4x + 5

    Answer: 3x² + 4x - 5

    Explanation: Using power rule, dy/dx = d(x³)/dx + d(2x²)/dx - d(5x)/dx + d(1)/dx = 3x² + 4x - 5