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 _______________________________________________________________________ Paul Abbott Phone: 61 8 6488 2734 School of Physics, M013 Fax: +61 8 6488 1014 The University of Western Australia (CRICOS Provider No 00126G) AUSTRALIA http://physics.uwa.edu.au/~paul