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Re: How to programmatically rewrite (x + y/z) as (xz+ y)/z ?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg89173] Re: How to programmatically rewrite (x + y/z) as (xz+ y)/z ?
  • From: "AngleWyrm" <anglewyrm_nospamthanks at yahoo.com>
  • Date: Wed, 28 May 2008 04:44:45 -0400 (EDT)
  • References: <g1gqk6$1g1$1@smc.vnet.net>

"TuesdayShopping" <TuesdayShopping at yahoo.com> wrote in message 
news:g1gqk6$1g1$1 at smc.vnet.net...
> Given "(x + y/z)" as input, how do I get the same expression in the form 
> of "(xz+ y)/z".

Need a general goal to act on a general case: Change the form of a 
polynomial, so that the GCD is 1. Example:

(x/3 + y/4);
Greatest Common Divisor is 3*4=12, so multiply through and append division
( 12x/3 + 12y/4 )/12
( 4x + 3y )/12 




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