[NBLUG/talk] Graphing implicit equations

Augie Schwer augie at schwer.us
Fri Mar 5 13:16:01 PST 2004


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Lincoln Peters said:
> Is there a Linux program that can graph implicit equations?  The only
> programs I'm aware of are for Windows or Mac, and I can't find anything
> in the Debian repository capable of working with implicit equations (a
> search for a package whose name and/or description contains the word
> "implicit" fails to deliver any calculus-related packages).

I have never heard of the term "implicit equation", but a quick google
gave me the examples x + y = 1 and xy = 16. If these are indeed "implicit
equations" then you could very easily rewrite them as y = 1 - x and
y = 16 / x respectively.

In which case you could use gnuplot to plot the graph:

gnuplot> plot 16 / x

augie.


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