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Re: Exclude O[] from Series[] for Solve[] in Mathematica

• To: mathgroup at smc.vnet.net
• Subject: [mg92843] Re: Exclude O[] from Series[] for Solve[] in Mathematica
• From: Albert Retey <awnl at gmx-topmail.de>
• Date: Tue, 14 Oct 2008 05:01:33 -0400 (EDT)
• References: <gcva1a$fb4$1@smc.vnet.net>

vjp2.at at at.BioStrategist.dot.dot.com wrote:
> I expand a function as a Series[] but the O[] part prevents Solve[] from
> working. I try Part[] and it returns something which also confuses
> Solve[]. First[] works, but produces useless results, but this is why I am
> sure this is what I want to do.
> 
> 
> 				    - = -
>  Vasos Panagiotopoulos, Columbia'81+, Reagan, Mozart, Pindus, BioStrategist
> 	   http://ourworld.compuserve.com/homepages/vjp2/vasos.htm
>   ---{Nothing herein constitutes advice.  Everything fully disclaimed.}---
>    [Homeland Security means private firearms not lazy obstructive guards]
>  [Urb sprawl confounds terror] [Remorse begets zeal] [Windows is for Bimbos]
> 
Normal does the trick:

Solve[Normal[Series[Exp[x], {x, 0, 2}]] == 2, x]

usually it is a good idea to show an example of what you try to do. This
makes more clear what you try to achieve and it is less work for people
to help you, which of course gives you more and better answers...

hth,

albert