How to force an expression into Rational Function form?

• To: mathgroup at christensen.cybernetics.net
• Subject: [mg1558] How to force an expression into Rational Function form?
• From: bracken at kevily.ECE.CMU.EDU (J Eric Bracken)
• Date: Sat, 24 Jun 1995 05:28:55 -0400
• Organization: Carnegie Mellon University

```Is there a way to force a univariate expression into the form
of a rational function (i.e., the ratio of two polynomials)?

Apart[] almost does the job, but if it's able to factor the
denominator polynomial, it does so, which leaves you with the
SUM of several rational functions.  I want just a single big
rational function.

I guess this is just a special case of the problem of clearing all
sums of fractions and generating one big fraction; for example,

TIA,

--Eric

__________________________________________________________________
________   ________   __   ________
/\_______\ /\_______\ /\_\ /\_______\ J. Eric Bracken, Ph.D.
/ / ______// / ____  // / // / ______/ Visiting Lecturer, Dept. of ECE
/ / /__\   / / /__\/ // / // / /        Carnegie Mellon University
/ / ____/  / / ___  _// / // / /___      Pittsburgh, PA 15213
/ / /____\ / / / \/ / / / // / /____\     (412) 268-8944 FAX (412) 268-3204
\/_______/ \/_/  \/_/ \/_/ \/_______/     eric.bracken at ece.cmu.edu

http://www.ece.cmu.edu/afs/ece/usr/bracken/.home-page.html
__________________________________________________________________

```

• Prev by Date: Priority Process
• Next by Date: Re: Fitting data on a vertical line
• Previous by thread: Priority Process
• Next by thread: Re: Fitting data on a vertical line