$\int \frac{\cos 2x - \cos 2\alpha}{\cos x - \cos \alpha} dx$ का मान ज्ञात कीजिए।

  • A
    $2(\sin x - x \cos \alpha) + c$
  • B
    $2(\sin x + x \cos \alpha) + c$
  • C
    $2(\sin x - 2x \cos \alpha) + c$
  • D
    $2(\sin x + 2x \cos \alpha) + c$

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