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: Coupled Differential Equations

  • To: mathgroup at smc.vnet.net
  • Subject: [mg34772] Re: Coupled Differential Equations
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Thu, 6 Jun 2002 01:54:54 -0400 (EDT)
  • Organization: Universitaet Leipzig
  • References: <adkf9d$9u8$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

something like

n = 5;
Table[
  V[k]'[t] == 
    V[k][t] + Sum[V[k][t]*V[j][t]*(1 - KroneckerDelta[j, k]), {j, 0,
n}], {k, 
    0, n}]

??

Regards
  Jens

Cyrill Slezak wrote:
> 
> I understand that NDSolve will solve a set of first order coupled. diff.eqn.
> Here is my problem: I have a set of 20+ equation that all have the exact
> same structure and I can't seem to find an easy way to input them. For any
> help I'd be highly appreciative. The equations are of the form
> 
> d V_k(l)/d l = V_k(l) + Sum[ V_k'(l), (k not equal k')]
> 
> where k is the number of diff. eqn.
> 
> Thanks for any help,
> 
> Cyrill


  • Prev by Date: Re: [MacOS X] User interface Q
  • Next by Date: Re: Simplify using assumptions and Gamma[*]
  • Previous by thread: Re: Coupled Differential Equations
  • Next by thread: RE: Coupled Differential Equations