$\int e^{\tan ^{-1} x} \left(1 + \frac{x}{1 + x^2} \right) dx$

  • A
    $\left(\frac{x}{2}\right) e^{\tan ^{-1} x} + c$
  • B
    $x e^{\tan ^{-1} x} + c$
  • C
    $\left(\frac{1}{2}\right) e^{\tan ^{-1} x} + c$
  • D
    $e^{\tan ^{-1} x} + c$

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