समाकलन $\int_{-\frac{\pi}{2}}^{\frac{\pi}{2}} \left(x^2 + \log \frac{\pi-x}{\pi+x}\right) \cos x \, dx$ का मान ज्ञात कीजिए।

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

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