Mathematics · JEE | INTEGRALS

Evaluate \( \int \frac{1}{1+x^2} \, dx \).

1. A
   \( \log(1+x^2) + C \)
2. B
   \( -\cot^{-1} x + C \)
3. C
   \( \sin^{-1} x + C \)
4. D
   \( \tan^{-1} x + C \)