समाकलन $\int_{-\pi / 2}^{\pi / 2}\left(x^2+\ln \frac{\pi+x}{\pi-x}\right) \cos x \, dx$ का मान है

  • A
    $0$
  • B
    $\frac{\pi^2}{2}-4$
  • C
    $\frac{\pi^2}{2}+4$
  • D
    $\frac{\pi^2}{2}$

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