Re: Eliminate Complex Roots
- To: mathgroup at smc.vnet.net
- Subject: [mg64438] Re: Eliminate Complex Roots
- From: Paul Abbott <paul at physics.uwa.edu.au>
- Date: Fri, 17 Feb 2006 04:11:46 -0500 (EST)
- Organization: The University of Western Australia
- References: <dspffj$cd0$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
In article <dspffj$cd0$1 at smc.vnet.net>, bghiggins at ucdavis.edu wrote:
> Suppose I have the following equation and I want to plot the real roots
> using Plot as a function of the parameter b
>
> a^3 + 10*a^2 - 15*a + b == 0
Why not use ImplicitPlot?
ImplicitPlot[a^3 + 10 a^2 - 15 a + b == 0,
{a, -12, 3}, {b, -20, 10}, PlotPoints -> 100, AspectRatio -> 1/3];
Cheers,
Paul
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