engineering mathematics MCQ #851

If y = 1 / (1 + x²), then dy/dx = ?

engineering mathematics MCQ #851

  1. Question 1

    Q1. If y = 1 / (1 + x²), then dy/dx = ?

    • A) -2x / (1 + x²)²
    • B) 2x / (1 + x²)²
    • C) -2x / (1 + x²)
    • D) 2x / (1 + x²)

    Answer: -2x / (1 + x²)²

    Explanation: Using the quotient rule or recognizing it as a derivative of a composite function.