यदि $\int \frac{\sin \left(x-\frac{\pi}{4}\right)}{2+\sin 2 x} d x=-\frac{1}{\sqrt{2}} \tan ^{-1}(f(x))+C$ है,तो $f(x)=$

  • A
    $\sin x-\cos x$
  • B
    $\sqrt{2} \cos \left(x-\frac{\pi}{4}\right)$
  • C
    $\sin \left(x-\frac{\pi}{4}\right)$
  • D
    $\sqrt{2} \tan \left(x-\frac{\pi}{4}\right)$

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यदि $x \in \left( \frac{\pi}{4}, \frac{3\pi}{4} \right)$ है,तो $\int \frac{\sin x - \cos x}{\sqrt{1 - \sin 2x}} e^{\sin x} \cos x \, dx = $

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$\int \frac{e^x \, dx}{\sqrt{1 - e^{2x}}} = $

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