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MathGroup Archive 2005

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Form of a linear equation

  • To: mathgroup at smc.vnet.net
  • Subject: [mg53734] Form of a linear equation
  • From: "DJ Craig" <spit at djtricities.com>
  • Date: Tue, 25 Jan 2005 05:03:48 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

I'm trying to convert this linear equation:

-(4+4x+y) / 17^(1/2) = (2+x+y) / 2^(1/2)

into the form:

(a_)*x + (b_)*y + (c_) = 0

This sounds simple enough, but I can't figure out how to make
Mathematica do it.  My TI-89 does it automatically, but I need to be
able to do this like a batch process for a bunch of linear equations.
Heres the solution the TI-89 gives me:

\!\(\*
StyleBox[\(\((\(\(-4\)\ \@17\)\/17 - \@2\/2)\)\ x + \((\(-\@17\)\/17
- \
\@2\/2)\)\ y - \(3\ \@17\)\/17 - \@2 = 0\),
FontWeight->"Bold"]\)

Just copy and paste that mess into Mathematica and it will change into
the equation at the top, but in the form that I want it.

I haven't been using Mathematica for long.  I'm used to my TI-89; I've
been using it for years.


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