સંકલન $I = \int \frac{dx}{(1 + e^x)(1 + e^{-x})}$ નું મૂલ્ય શું છે?

  • A
    $\frac{-1}{1 + e^x}$
  • B
    $\frac{e^x}{1 + e^x}$
  • C
    $\frac{1}{1 + e^x}$
  • D
    આમાંથી કોઈ નહીં

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