Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2002
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2002

[Date Index] [Thread Index] [Author Index]

Search the Archive

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




  • Prev by Date: Fractional derivative
  • Next by Date: 1 equals 3 (among others)
  • Previous by thread: Fractional derivative
  • Next by thread: Re: ORDINARY DIFFERENTIAL EQUATION