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Maclaurin series for ArcCosh[x]

• To: mathgroup at smc.vnet.net
• Subject: [mg73581] Maclaurin series for ArcCosh[x]
• From: Andrzej Kozlowski <akoz at mimuw.edu.pl>
• Date: Thu, 22 Feb 2007 04:35:47 -0500 (EST)

Try:

Series[ArcCosh[x], {x, 0, 11}]

and now try

ArcCosh[x] + O[x]^12

At least with my version of Mathematica:

$Version
5.2 for Mac OS X (February 24, 2006)


I do not get the same answer (in fact in the latter case the input is  
returned unevaluated). With ArcSinh and any other function that I  
have tried in place of ArcCosh  the outputs are always the same.

Andrzej Kozlowski