Groups > comp.soft-sys.math.mathematica > #2039

Adding computed values to a Contourplot function

From	sigismond kmiecik <sigismond.kmiecik@wanadoo.fr>
Newsgroups	comp.soft-sys.math.mathematica
Subject	Adding computed values to a Contourplot function
Date	2011-05-03 09:43 +0000
Organization	Steven M. Christensen and Associates, Inc and MathTensor, Inc.
Message-ID	<ipoioe$g1h$1@smc.vnet.net> (permalink)

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Hello to everybody

How can I modify the code below (after Epilog) in order to add after 
"b^2-4ac=" its computed value and have everyhing framed?


a=0.5;b=1;c=6;d=2;e=3;f=-30;
ContourPlot[{a x^2  +b x*y + c  y^2  + d x  + e y - 30 == 0 }, {x, -12, 
10}, {y, -8, 8
}, ContourStyle-> {Red, Thick}, Axes -> True, AxesLabel-> {x,y} ,
Frame-> False,ImageSize-> {550,400}, Epilog->{Text[Style["b^2 - 
4ac=",FontSize-> 20],{5,5}]}]


I haven't found in the Mathematica 8 Documentation center a similar example.

Thanks

Sigismond Kmiecik

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Adding computed values to a Contourplot function sigismond kmiecik <sigismond.kmiecik@wanadoo.fr> - 2011-05-03 09:43 +0000
  Re: Adding computed values to a Contourplot function Peter Breitfeld <phbrf@t-online.de> - 2011-05-03 12:23 +0000
  Re: Adding computed values to a Contourplot function Dan <dflatin@rcn.com> - 2011-05-04 10:35 +0000
  Re: Adding computed values to a Contourplot function Helen Read <readhpr@gmail.com> - 2011-05-04 10:31 +0000

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