$\int \sqrt{1+\cos x} \, dx$ का मान ज्ञात कीजिए।

  • A
    $2 \sqrt{2} \cos \frac{x}{2} + C$
  • B
    $2 \sqrt{2} \sin \frac{x}{2} + C$
  • C
    $\sqrt{2} \cos \frac{x}{2} + C$
  • D
    $\sqrt{2} \sin \frac{x}{2} + C$

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