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Hello everyone..

∫√((1+(e^-x))^2)dx

I first tried to do a u sub and then attempt a trig sub however I cant do anything with the e^-x left in the u sub. Does anyone have another way I can integrate this thing??

Thank you for any suggestions/help!

## Homework Statement

∫√((1+(e^-x))^2)dx

**2. The attempt at a solution**I first tried to do a u sub and then attempt a trig sub however I cant do anything with the e^-x left in the u sub. Does anyone have another way I can integrate this thing??

Thank you for any suggestions/help!

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