engineering mathematics MCQ #814

The derivative of ln(x² + 1) is?

engineering mathematics MCQ #814

  1. Question 1

    Q1. The derivative of ln(x² + 1) is?

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

    Answer: 2x / (x² + 1)

    Explanation: Using the chain rule for ln(u), where u = x² + 1, so u' = 2x, the derivative is u'/u = 2x / (x² + 1).