Re: phase portraits
- To: mathgroup at smc.vnet.net
- Subject: [mg116212] Re: phase portraits
- From: Murray Eisenberg <murray at math.umass.edu>
- Date: Sat, 5 Feb 2011 05:45:46 -0500 (EST)
Don't forget the wonderful function EquationTrekker, in a standard add-on package EquationTrekker, that's included with Mathematica. On 2/4/2011 1:41 AM, James wrote: > Hi, > > By far the nicest function in Mathematica to use for phase portraits is StreamPlot. I believe that was a V7 feature. For example, take: > > dx=x^2+2xy+y > dy=2x-3y^2 > > then: > > StreamPlot[{x^2+2xy+y,2x-3y^2},{x,-5,5},{y,-5,5}] > > will draw a nice phase portrait. > -- 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