Re: Compute ArcTan(n Pi+ Pi/2 + O(1))
- To: mathgroup at smc.vnet.net
- Subject: [mg95865] Re: [mg95808] Compute ArcTan(n Pi+ Pi/2 + O(1))
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Thu, 29 Jan 2009 05:50:52 -0500 (EST)
- Reply-to: hanlonr at cox.net
Series[ArcTan[n Pi + Pi/2 + d], {d, 0, 1}] // Normal
d/((Pi*n + Pi/2)^2 + 1) + ArcTan[Pi*n + Pi/2]
Bob Hanlon
---- Francois at news.free.fr wrote:
=============
Hello,
I'm new to Mathematica and I want to compute a serie expantion of
ArcTan(n Pi + Pi/2 + O(1)) (The O is a big O and is taken when n goes
to Infinity)
I dont know how to input O(1) in Mathematica. For example
O[n,Infinity]^0 simplifies to 1 which is not what I want.
Thanks for the help.
Francois
--
Bob Hanlon