Re: ORDINARY DIFFERENTIAL EQUATION
- To: mathgroup at smc.vnet.net
- Subject: [mg32179] Re: ORDINARY DIFFERENTIAL EQUATION
- From: "Steve Luttrell" <luttrell at signal.qinetiq.com>
- Date: Fri, 4 Jan 2002 05:03:54 -0500 (EST)
- Organization: Defence Evaluation & Research Agency
- References: <a0ugmj$5t3$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
"Khaled Saad" <khaledma_sd at hotmail.com> wrote in message news:a0ugmj$5t3$1 at smc.vnet.net... > Dear mathgroup > I am trayin to plot the directin of vector field of system of ordinary > differential equation but i could not > > the system is > x'[t]=(1-x[t]-0.5 y[t])x[t] > y'[t]=(1-y[t]-0.8 x[t])y[t] Is this the sort of thing you were looking for? << Graphics`PlotField` PlotVectorField[{(1 - x - 0.5 y)x, (1 - y - 0.8 x)y}, {x, -10, 10}, {y, -10, 10}]; -- Steve Luttrell QinetiQ Malvern Technology Centre UK