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MathGroup Archive 2000

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Re: transposing an equation

  • To: mathgroup at smc.vnet.net
  • Subject: [mg26276] Re: transposing an equation
  • From: "Lutz Schaefer" <lschafer at golden.net>
  • Date: Sun, 10 Dec 2000 00:19:48 -0500 (EST)
  • Organization: Advanced Imaging Methodology Consultation
  • References: <90kq3d$r25@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Christopher Deacon <cdeacon at physics.mun.ca> wrote in message
news:90kq3d$r25 at smc.vnet.net...
> Suppose y=a x^2+b x +c.
>
> How can I get Mathematica to solve for x (i.e., x=Ay^2+By+C) and give me
the
> values for the constants A,B,C?
>
> Chris
>

that is not too hard. Just use the 'Solve' function, like

Solve[ a x^2 + b x + c == y, x ]

solves your polynomial (two solutions) and writes it in terms of x. If you
read the help you will find some helpful examples too.


Cheers
Lutz


--
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Lutz Schaefer
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Email: lschafer at golden.net
Phone, FAX: (519)-894-8870
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