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MathGroup Archive 2004

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Re: Coefficients of previous result

  • To: mathgroup at smc.vnet.net
  • Subject: [mg53124] Re: [mg53096] Coefficients of previous result
  • From: DrBob <drbob at bigfoot.com>
  • Date: Fri, 24 Dec 2004 05:59:12 -0500 (EST)
  • References: <200412231258.HAA21139@smc.vnet.net>
  • Reply-to: drbob at bigfoot.com
  • Sender: owner-wri-mathgroup at wolfram.com

expr = (1. + 2.*x + 2.*x^2 + 2.*x^3)/(1. + 2.*x + 2.*x^2);
Rationalize[expr]

(1 + 2*x + 2*x^2 + 2*x^3)/(1 + 2*x + 2*x^2)

or

expr /. a_Real -> Round[a]
(1 + 2*x + 2*x^2 + 2*x^3)/ (1 + 2*x + 2*x^2)

It's much easier, by the way, if you post expressions in InputForm. You can (temporarily) convert a cell to InputForm using Ctrl-Shift-I or menu command Cell>Convert, then copy and paste it into e-mail. Ctrl-Shift-N or Ctrl-Shift-T will convert the cell back to standard or traditional form.

Bobby

On Thu, 23 Dec 2004 07:58:51 -0500 (EST), Milind Gupta <milind.gupta at gmail.com> wrote:

> The result of my previous step is something like this:
>
> expr =    1. + 2. x + 2. x^2 +  2. x^3
>             -----------------------------------------
>                1. + 2. x + 2. x^2
>
>    But I need it to be like this:
>
>
> expr =    1 + 2 x + 2 x^2 +  2 x^3
>             -----------------------------------------
>                1 + 2 x + 2 x^2
>
> so that I can use it with another function properly. Is there any way
> to do that?
>
> Milind
>
>
>
>



-- 
DrBob at bigfoot.com
www.eclecticdreams.net


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