$\int_{ - \pi }^{\pi } {\frac{{2x(1 + \sin x)}}{{1 + {{\cos }^2}x}}dx} $ का मान ज्ञात कीजिए।

  • A
    ${\pi ^2}/4$
  • B
    ${\pi ^2}$
  • C
    $0$
  • D
    $\pi /2$

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