$\int e^{\tan ^{-1} x}\left(1+\frac{x}{1+x^{2}}\right) dx$ का मान ज्ञात कीजिए।

  • A
    $x e^{\tan ^{-1} x}+c$
  • B
    $e^{\tan ^{-1} x}+c$
  • C
    $\frac{1}{2} e^{\tan ^{-1} x}+c$
  • D
    $\frac{1}{2} xe^{\tan ^{-1} x}+c$

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