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RE: Problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg43005] RE: [mg42967] Problem
  • From: "David Park" <djmp at earthlink.net>
  • Date: Fri, 8 Aug 2003 00:26:21 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Andrew,

You can use ImplicitPlot. You must use an "==" sign and not "=" and there
will only be real solutions for certain values of c. Also you will have to
experiment with the x domain, and with some types of equations you will also
need to specify a y domain. Check out the Help for ImplicitPlot in the
StandardPackages.

Needs["Graphics`ImplicitPlot`"]

ImplicitPlot[-5 == (x - x^2) + (y - y^2), {x, -10, 10}]

David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/

> From: Andrew Thomas [mailto:Andrew.Thomas at oft.gsi.gov.uk]
To: mathgroup at smc.vnet.net
>
>
> Dear All,
>
> This is a simple one but I cannot find out how to plot the following.
>
> c=(x-x^2)+(y-y^2) where c is a constant.
>
> The problem is that everytime I go to plot the plot is always defined
> as y=f(x,...) and so I cannot enter y^2 into the equation.
>
> Could someone please advise.
>
> Thank you and best wishes,
>
> Andrew
>
>
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