$\int_{0}^{\frac{\pi}{2}} \frac{4x \sin x + x^2 \cos x}{2\sqrt{\sin x}} dx$ का मान ज्ञात कीजिए।

  • A
    $\frac{\pi}{2}$
  • B
    $\frac{\pi^2}{4}$
  • C
    $\frac{\pi}{4}$
  • D
    $\frac{\pi^2}{16}$

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$\int_{0}^{\pi} \sin x \, dx = $ . . . . . . .

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