\[\int_{{}}^{{}}{\frac{dx}{{{e}^{x}}+{{e}^{-x}}}=}\] [Bihar CEE 1976; MNR 1974]

\[\log ({{e}^{x}}-{{e}^{-x}})\]

\[\log ({{e}^{x}}+{{e}^{-x}})\]

\[\int_{{}}^{{}}{\frac{dx}{{{e}^{x}}+{{e}^{-x}}}=}\] [Bihar CEE 1976;

1.	\[\int_{{}}^{{}}{\frac{dx}{{{e}^{x}}+{{e}^{-x}}}=}\] [Bihar CEE 1976; MNR 1974]
A.	\[{{\tan }^{-1}}({{e}^{-x}})\]
B.	\[{{\tan }^{-1}}({{e}^{x}})\]
C.	\[\log ({{e}^{x}}-{{e}^{-x}})\]
D.	\[\log ({{e}^{x}}+{{e}^{-x}})\]
Answer» C. \[\log ({{e}^{x}}-{{e}^{-x}})\]

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\[\int_{{}}^{{}}{\frac{dx}{{{e}^{x}}+{{e}^{-x}}}=}\] [Bihar CEE 1976; MNR 1974]

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