$\int_{0}^{1} \frac{\tan ^{-1} x}{1+x^{2}} d x$ ની કિંમત શોધો.

  • A
    $\frac{\pi^2}{8}$
  • B
    $\frac{\pi^2}{16}$
  • C
    $\frac{\pi^2}{32}$
  • D
    $\frac{\pi^2}{64}$

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