Class: 12 Subject: Math Topic: Integrals Year: 2022

Question:

If \(\int \frac{f'(x)}{f(x)}\,dx = \log |f(x)| + C\), then \(\int \frac{2x}{x^2 + 1}\,dx\) equals:
  • A. \(\log |x^2+1| + C\)
  • B. \(\log(x^2+1) + C\)
  • C. \(\tan^{-1}(x) + C\)
  • D. \(\frac{1}{x^2+1} + C\)
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