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Re: Dividing top and bottom

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  • Subject: [mg15641] Re: [mg15591] Dividing top and bottom
  • From: Andrzej Kozlowski <andrzej at>
  • Date: Sat, 30 Jan 1999 04:28:39 -0500 (EST)
  • Sender: owner-wri-mathgroup at

On Thu, Jan 28, 1999, Nicolas B.E. Sawyer <nbes at> wrote:

>How can I divide the denominator and numerator of an expression by a
>chosen variable and stop the result from simplifying. For example, how
>do I  divide the top and bottom of b/(b-a) by b to give 1/(1-a/b).
>Nicolas B.E. Sawyer
>Department of Electrical and Electronic Engineering, University of
>University Park,
>NG7 2RD.
>Tel: +44 115 9515151 ext 12028
>Fax: +44 115 9515616
>E-mail: nbes at

I can think of several way to do this. Perhaps the simplest way is to
define a function



1 - -

Another very simple way is to do this "by hand". I do not actually mean
"without using Mathematica" (though that is indeed the simplest way to
solve this problem) but simply by entering /b into the top and bottom
and than using the Simplify button on the Algebraic Manipulation
pallete to simplify the numerator and the denominator separately.

Andrzej Kozlowski
Toyama International University

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