$ \int \frac{1}{1+e^{x}} d x $ का मान ज्ञात कीजिए।

  • A
    $ \log _{e}\left(\frac{e^{x}+1}{e^{x}}\right)+C $
  • B
    $ \log _{e}\left(\frac{e^{x}-1}{e^{x}}\right)+C $
  • C
    $ \log _{e}\left(\frac{e^{x}}{e^{x}+1}\right)+C $
  • D
    $ \log _{e}\left(\frac{e^{x}}{e^{x}-1}\right)+C $

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