indefinite-integration

Question: $\int_{{}}^{{}}{\frac{{{e}^{x}}}{(1+{{e}^{x}})(2+{{e}^{x}})}dx=}$



1) $\log [(1+{{e}^{x}})(2+{{e}^{x}})]+c$
2) $\log \left[ \frac{1+{{e}^{x}}}{2+{{e}^{x}}} \right]+c$
3) $\log [(1+{{e}^{x}})\sqrt{2+{{e}^{x}}}]+c$
4) None of these
Solution: Explanation: No Explanation
Integration of rational functions by using partial fractions Evaluation of various forms of integration

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