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\int \frac{5 e^{2 x}}{1 + e^{4 x}} = ?

\frac{5}{4} \ln (1 + e^{4 x}) + c

\frac{5}{2} \ln (1 + e^{4 x}) + c

\frac{5}{2} \tan^{- 1} (e^{2 x}) + c

\frac{5}{4} \ln (1 + e^{2 x}) + c

None

ANS : 3

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