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MathGroup Archive 2004

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Re: Remove the higher order terms in series expansion

  • To: mathgroup at smc.vnet.net
  • Subject: [mg52836] Re: [mg52798] Remove the higher order terms in series expansion
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Tue, 14 Dec 2004 05:59:36 -0500 (EST)
  • Organization: Mathematics & Statistics, Univ. of Mass./Amherst
  • References: <200412130923.EAA23483@smc.vnet.net>
  • Reply-to: murray at math.umass.edu
  • Sender: owner-wri-mathgroup at wolfram.com

Hardly hiding at all!

Look in Section 1.5.10, "Power Series", of the Mathematica Book -- 
either the printed version or the on-line version you can access in the 
Help Browser.  The 6th example there shows how evaluating Normal at the 
value that Series returns does exactly what you want.

"Normal" is also mentioned in the page you see if you simply look up 
Series in the HelpBrowser's Built-in Functions.


highorder wrote:
> I guess this should be simple and hiding somewhere in the manual. Is
> there a quick way to remove the high order terms after using
> Series[f,{x,x0,n}] command? The problem comes from the output is
> actually given by:
> 
> expansion term + O(x^3);
> 
> the O(x^3) should be removed. I will keep trying but wondering if
> anyone has a quick answer.


-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305


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