What is the value of the integral \[I=\int{\frac{dx}{(1+{{e}^{x}})\,\,(1+{{e}^{-x}})}}\] [DCE 1999]

\[\frac{{{e}^{x}}}{1+{{e}^{x}}}\]

What is the value of the integral \[I=\int{\frac{dx}{(1+{{e}^{x}})\,\,

1.	What is the value of the integral \[I=\int{\frac{dx}{(1+{{e}^{x}})\,\,(1+{{e}^{-x}})}}\] [DCE 1999]
A.	\[\frac{-1}{1+{{e}^{x}}}\]
B.	\[\frac{{{e}^{x}}}{1+{{e}^{x}}}\]
C.	\[\frac{1}{1+{{e}^{x}}}\]
D.	None of these
Answer» B. \[\frac{{{e}^{x}}}{1+{{e}^{x}}}\]

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What is the value of the integral \[I=\int{\frac{dx}{(1+{{e}^{x}})\,\,(1+{{e}^{-x}})}}\] [DCE 1999]

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