Neil,
Forgive me for stating what may be obvious, but you could at least get a
steady-state solution for your problem - set the derivatives to zero and
solve the corresponding set of linear equations. Just in case you hadn't
considered this aspect of the problem...
Dave Holmgren
----- Original Message -----
From: "Neil Klepeis" <nklepeis at uclink4>
To: "Nikolaos I. Ioakimidis" <ioakimidis@otenet.gr>
Cc: <maxima@www.ma.utexas.edu>
Sent: Thursday, August 29, 2002 11:06 AM
Subject: Re: [Maxima] DESOLVE for linear ODE's with CC
> Nikos,
>
> Thanks for your thorough response. Your reply leads me to believe that
> 1. I probably cannot solve my problem with Maxima, Mathematica, or any
> other symbolic math problem, and 2. I should just solve it numerically.
>
> But with regard to the desirability of a very large solution (many
> pages): my goal is to obtain an efficient code for calculating the
> behavior of a physical system for a variety of parameter values, each of
> which can vary across time. Obtaining a hard-coded analytical result
> (say, by exporting the formulae into C or Fortran) is, I believe, more
> efficient than running a numerical solver. And one can learn something
> just by looking at the symbolic result, however long and complicated it
> may be.
>
> Regards,
> Neil
>
>
> --
> ______________________________________________________
> Neil E. Klepeis, UC Berkeley, School of Public Health,
> and Lawrence Berkeley National Laboratory,
> Berkeley, CA USA. Voice: 831-768-9510
>
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