यदि $\int \frac{(x - 1)^2}{(x^2 + 1)^2} dx = \tan^{-1} (x) + g(x) + k$ है,तो $g(x)$ का मान ज्ञात कीजिए।

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

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