engineering mathematics MCQ #733

If y = ln(x), then d²y/dx² = ?

engineering mathematics MCQ #733

  1. Question 1

    Q1. If y = ln(x), then d²y/dx² = ?

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

    Answer: -1 / x²

    Explanation: First derivative of ln(x) is 1/x. Second derivative is derivative of 1/x, which is -1/x².