implicits equations

*To*: mathgroup at smc.vnet.net*Subject*: [mg13036] implicits equations*From*: Delattre Eric <Eric.Delattre at u-paris10.fr>*Date*: Sat, 4 Jul 1998 16:44:43 -0400*Sender*: owner-wri-mathgroup at wolfram.com

I tried and didn't find the way of plotting implicit equations such as x^2+y^2=1 in that case I can use the function circle but most of times things are not so easy If I want to plot the general equation of a conical eg : ax^2+by^2+cx+dy+exy+g=0 without knowing if it's an ellipsis or a hyperbola i can't use the function circle ! So is there anyway to deal with such a problem ?? Thanks to all ************************************************* * Eric DELATTRE * * THEMA (UMR CNRS 7536) * * Bureau 508b * * UFR SEGMI * * UNIVERSITE Paris X Nanterre * * 92000 NANTERRE * * Tel 01 40 97 59 62 * * Fax 01 40 97 71 42 * * Email delattre at moliere.u-paris10.fr * * * *************************************************