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My name is Mike Epstein, and I have just graduated from high school. In
pre-calculus and calculus, I noticed that my teachers had a hard time
demonstrating many implicit expressions. There was no easy way to do it,
and there was no software available that didn't cost hundreds of dollars.

So I decided to write SuperGraph to help them out. SuperGraph is a
professional-quality implicit (and function) graphing program for
Macintosh and Power Macintosh.

If you teach high-school math, SuperGraph can really help you help your
students visualize implicit expressions. SuperGraph is shareware; if you
use it, registration is $15 (or $300 for a site license).

I hope you will consider trying SuperGraph. It's a free download, and
there's no obligation whatsoever. Some additional information is below.

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SuperGraph is a powerful, easy-to-use, inexpensive program to graph
explicit and implicit mathematical functions. Implicit expressions, ones
that cannot easily be solved for either x or y, have presented a challenge
to visualize. SuperGraph makes that a thing of the past.

For example, SuperGraph can graph complex expressions in two variables
like y^2(y-1)-x^2(y^2-1)+2xy^2-x^4=0. And best of all, it's only $15
(payable through Kagi Shareware or directly to the author at 90 Maple
Drive, Great Neck, NY 11021).

SuperGraph differs from Apple's Graphing Calculator in its flexibility and
customizability when dealing with implicit expressions (which Graphing
Calculator does not directly support) and in its ability to run on 680x0
(non-PowerPC) Macintosh computers.

SuperGraph is especially suited to demonstrating various implicit
expressions and techniques of sketching them in a classroom situation.

SuperGraph requires either a PowerPC processor or a 68020, 68030 or 68040
with math coprocessor (FPU).

More information about SuperGraph is available at
<http://www.nyiq.net/~epstein/programs/supergraph>.

--
        Mike Epstein     epstein@nyiq.net     Long Island, NY
"When one door closes another door opens; but we so often look so long
 and so regretfully upon the closed door, that we do not see the ones
 which open for us."                   --Alexander Graham Bell
http://www.nyiq.net/~epstein/          Finger for PGP 2.6.2 public key