engineering mathematics MCQ #830

If y = 1 / (2x + 1), then dy/dx =

engineering mathematics MCQ #830

  1. Question 1

    Q1. If y = 1 / (2x + 1), then dy/dx =

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

    Answer: -2 / (2x + 1)²

    Explanation: Using the chain rule and the fact that the derivative of 1/u is -1/u² * du/dx, we get -2 / (2x + 1)².