engineering mathematics MCQ #628

If y = x³ - 2x, then dy/dx = ?

engineering mathematics MCQ #628

  1. Question 1

    Q1. If y = x³ - 2x, then dy/dx = ?

    • A) 3x² - 2
    • B) x² - 2
    • C) 3x - 2
    • D) x - 2

    Answer: 3x² - 2

    Explanation: Using power rule, dy/dx = d(x³)/dx - d(2x)/dx = 3x² - 2.