engineering mathematics MCQ #894

Differentiate f(x) = ln(x² + 1)

engineering mathematics MCQ #894

  1. Question 1

    Q1. Differentiate f(x) = ln(x² + 1)

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

    Answer: 2x / (x² + 1)

    Explanation: Apply the chain rule: f'(x) = (1/(x²+1)) * d(x²+1)/dx = (1/(x²+1)) * 2x.