engineering mathematics MCQ #688

If y = 1 / x, then dy/dx = ?

engineering mathematics MCQ #688

  1. Question 1

    Q1. If y = 1 / x, then dy/dx = ?

    • A) -1 / x²
    • B) 1 / x²
    • C) -1 / x
    • D) 1 / x

    Answer: -1 / x²

    Explanation: Using the power rule, if y = x^(-1), then dy/dx = -1x^(-2) = -1 / x².