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<font face="Myriad Pro">What about<br>
<br>
\documentclass[12pt]{article}<br>
\usepackage{pst-plot,pstricks,pstricks-add}<br>
\begin{document}<br>
\begin{pspicture*}(-3,-3.2)(3.5,3.5)<br>
\psplotImp[linewidth=2pt,linecolor=blue,algebraic](-5,-3)(4,2.4){
x^2-x*y+y^2-7}<br>
\end{pspicture*}<br>
\end{document}<br>
<br>
Regards,<br>
<br>
Juergen<br>
</font><br>
Patrick Drechsler wrote:
<blockquote cite="mid:87odf6myly.fsf@pdrechsler.de" type="cite">
<pre wrap="">"Hensh, Richard" <a class="moz-txt-link-rfc2396E" href="mailto:hensh@math.msu.edu"><hensh@math.msu.edu></a> writes:
</pre>
<blockquote type="cite">
<pre wrap="">Can PSTricks be used to sketch the graph of an equation? For
example,
x^2 - xy + y^2 = 7
Using Mathematica, I was able to use the ContourPlot function to
sketch the graph and then import the object, but I prefer
self-contained solutions whenever possible.
</pre>
</blockquote>
<pre wrap=""><!---->
This is only possible if you provide a range of data for X and
Y. There is no "auto-scaling" in PSTricks or postscript as far as I
know.
</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="65">--
jürgen gilg
austr. 59
70376 stuttgart
tel 0711-59 27 88
e-mail <a class="moz-txt-link-abbreviated" href="mailto:gilg@acrotex.net">gilg@acrotex.net</a>
website <a class="moz-txt-link-abbreviated" href="http://www.acrotex.net">www.acrotex.net</a>
<a class="moz-txt-link-abbreviated" href="http://www.gilligan-online.de">www.gilligan-online.de</a>
<a class="moz-txt-link-abbreviated" href="http://www.brueckenkurs-physik.de">www.brueckenkurs-physik.de</a></pre>
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