Question: Problem of simplification of hyperbolic expressions

Hello all,

I have a problem in comparing two expressions. I have to verify they are equal, but I am totally stuck even if it is obvious it is correct (but I have to do it with Maple).

These are the two expressions:

http://www.hostingpics.net/viewer.php?id=312636maple.png

 

I tried to convert them into exp, but it doesn't work at all...

 

Thanks a lot for your help, Julien

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