       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)
• 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.
>
>

```

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