Re: plot hyperbola (OT)

*To*: mathgroup at smc.vnet.net*Subject*: [mg57425] Re: plot hyperbola (OT)*From*: Urijah Kaplan <uak at sas.upenn.edu>*Date*: Fri, 27 May 2005 04:57:35 -0400 (EDT)*Organization*: University of Pennsylvania*References*: <200505240912.FAA19094@smc.vnet.net> <200505251002.GAA04053@smc.vnet.net> <d741vo$ihr$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

This is good to know--unfortunately I'd like to keep the little yellow smileys. So I'll probably continue to use my work-around, which is Control-U (View Source), and then copying. --Urijah Kaplan Murray Eisenberg wrote: > I received a solution to this annoyance at long last from the Mozilla > forum (where I had posted months ago and never had a response): In > Thunderbird, in Options > Display, uncheck "When displaying plain text > messages: Display emoticons as graphics". > > So somebody on the Mozilla team seems to think ^2 is an emoticon! > > Murray Eisenberg wrote: > >>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 >>> >>> 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 >>> >>> >>> >>> >>> >>> >> >> >

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

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