$ \int_{0}^{\frac{\pi}{2}} \frac{1}{a^{2} \sin ^{2} x+b^{2} \cos ^{2} x} d x $ का मान ज्ञात कीजिए।

  • A
    $ \frac{\pi}{4ab} $
  • B
    $ \frac{\pi}{2ab} $
  • C
    $ \frac{\pi}{2a} $
  • D
    $ \frac{\pi}{2b} $

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