જો $\int {\frac{{{e^x}(1 + \sin x)}}{{1 + \cos x}}} dx = {e^x}f(x) + c$ હોય,તો $f(x) = $

  • A
    $\sin \frac{x}{2}$
  • B
    $\cos \frac{x}{2}$
  • C
    $\tan \frac{x}{2}$
  • D
    $\log \frac{x}{2}$

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