Re: Plotting 2d graphs?

*To*: mathgroup at smc.vnet.net*Subject*: [mg57174] Re: [mg57168] Plotting 2d graphs?*From*: Bob Hanlon <hanlonr at cox.net>*Date*: Fri, 20 May 2005 04:43:07 -0400 (EDT)*Reply-to*: hanlonr at cox.net*Sender*: owner-wri-mathgroup at wolfram.com

Needs["Graphics`"]; soln=Solve[2x^2+16x+32==0,x] {{x\[Rule]-4},{x\[Rule]-4}} Plot[2x^2+16x+32,{x,-5,-3}]; ImplicitPlot[2x^2+16x+32==y, {x,-5,-3},AspectRatio->1/GoldenRatio]; Plot[Evaluate[y/. Solve[(x-5)^2/16+(y+4)^2/25==1,y]], {x,1,9}, AspectRatio->Automatic]; ImplicitPlot[(x-5)^2/16+(y+4)^2/25==1, {x,1,9}]; Bob Hanlon > > From: Paul Hughes <psidoc at gmail.com> To: mathgroup at smc.vnet.net > Date: 2005/05/19 Thu AM 03:09:21 EDT > Subject: [mg57174] [mg57168] Plotting 2d graphs? > > I'm having trouble using the basic 2d plot function. I want to be > able to plot things such as a simple quadratic or ellipse: > > Examples: 2x^2 + 16x + 32 = 0 (Quadratic) > > (x-5)^2/16 + (y+4)^2/25 = 1 (Ellipse) > > But have failed to do so, having tried every variation i can think of > to get it to work. > >