Re: Problem with Series
- To: mathgroup at smc.vnet.net
- Subject: [mg114186] Re: Problem with Series
- From: Peter Pein <petsie at dordos.net>
- Date: Fri, 26 Nov 2010 05:29:55 -0500 (EST)
- References: <ic9le2$nuv$1@smc.vnet.net>
Am Sat, 20 Nov 2010 23:25:54 +0000 (UTC) schrieb Themis Matsoukas <tmatsoukas at me.com>: > That's more math than I can handle... I merely wanted to identify > the linear term of the series expansion. > > Themis > Hi, apparently you are looking for the series expansion of ArcSinh[x] (for real x): In[1]:= Assuming[x\[Element]Reals, f=Log[Coth[1/2 ArcCosh[Sqrt[1+x^2]/x]]]//TrigToExp//FullSimplify] Out[1]= ArcSinh[x] and that task isn't too hard, is it? ;-) Cheers, Peter