This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Correction of angle a. The original can be viewed here: Hyperbolic functions.svg: .
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Original upload log
This image is a derivative work of the following images:
2008-01-03T06:31:20Z File Upload Bot (Magnus Manske) 520x420 (2203 Bytes) {{BotMoveToCommons|en.wikipedia}} {{Information |Description={{en|Hand-crafted by myself to copy [[:en::Image:Funhipgeom.png]].}} |Source=Transfered from [http://en.wikipedia.org en.wikipedia] Transfer was stated to be made