समाकलन $\int_{\frac{\pi}{4}}^{\frac{3\pi}{4}} \frac{x}{1+\sin x} dx$ का मान है

  • A
    $\frac{\pi}{2}(\sqrt{2}+1)$
  • B
    $\pi(\sqrt{2}-1)$
  • C
    $2\pi(\sqrt{2}-1)$
  • D
    $\pi\sqrt{2}$

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