Re: Re: plot hyperbola (OT)

*To*: mathgroup at smc.vnet.net*Subject*: [mg57343] Re: [mg57292] Re: [mg57287] plot hyperbola (OT)*From*: Murray Eisenberg <murray at math.umass.edu>*Date*: Wed, 25 May 2005 06:02:50 -0400 (EDT)*Organization*: Mathematics & Statistics, Univ. of Mass./Amherst*References*: <200505240912.FAA19094@smc.vnet.net>*Reply-to*: murray at math.umass.edu*Sender*: owner-wri-mathgroup at wolfram.com

This is a bit off-topic, but it's been an annoyance for a while now.... I've been having difficulty copying code such as that below from my e-mail client into Mathematica: The e-mail client, Thunderbird, displays expressions such as "x^2" in a 2-dimensional form, with a superscript (and no caret); when I copy from there and paste into Mathematica, of course I get just "x2" -- no superscript and no caret. I do have my e-mail client set so as not to display HTML as such. Any ideas? David Park wrote: > You could use the ImplicitPlot routine. First you have to load the > Graphics`ImplicitPlot` package that is in the StandardPackages. > > Needs["Graphics`ImplicitPlot`"] > > ImplicitPlot[ > x^2 + 3 x^2 y^3 + 67 x^4 y^2 + 34 == 0, {x, -50, 50}, {y, -30000, 0}, > AspectRatio -> 1] > > That is a difficult curve and I had to 'fish' around to find it. I also > changed the AspectRatio of the plot to 1 to avoid getting very high and very > narrow plots that went off screen. There may be other branches of the curve. > > You can plot quadratic equations the same way and they will be easier. > > For quadratic equations you may want to look at the ConicSections package at > my web site below. It will generate a parametrization for any conic section > which you can use to plot with ParametricPlot. It also will give the type of > conic, its parameters and how to transform it to standard form. > > David Park > djmp at earthlink.net > http://home.earthlink.net/~djmp/ > > > From: bd satish [mailto:bdsatish at gmail.com] To: mathgroup at smc.vnet.net > To: mathgroup at smc.vnet.net > > > > HI, i am a beginner. Will u please tell me how to plot > hyperbola,parabola,ellipse and circle in their standard forms > x^2/a^2 + y^2/b^2 = 1 > x^2/a^2 -- y^2/b^2 ==1 etc. > Also how do you plot a general curve (y versus x), say > x^2 +3 x^2 y^3 +67 x^4 y^2 +34==0 > *without solving explicitly for y* ( or x) > Please help > > > > > > -- Murray Eisenberg murray at math.umass.edu Mathematics & Statistics Dept. Lederle Graduate Research Tower phone 413 549-1020 (H) University of Massachusetts 413 545-2859 (W) 710 North Pleasant Street fax 413 545-1801 Amherst, MA 01003-9305

**Follow-Ups**:**Re: Re: Re: plot hyperbola (OT)***From:*Murray Eisenberg <murray@math.umass.edu>

**Re: Re: Re: plot hyperbola (OT)***From:*DrBob <drbob@bigfoot.com>

**References**:**Re: plot hyperbola***From:*"David Park" <djmp@earthlink.net>