Re: math modelling

[Vittorio <v.demartino2@virgilio.it>]

Try also R (http://cran.r-project.org/ ; apt-get install r-recommended) which 
solves many problems of this kind 
Vittorio


On Tuesday 30 March 2004 21:29, David Fokkema wrote:
> Hi group,
>
> I'm looking for free software which is suited for modelling. For
> example, I'd like to simulate a flying cannonball with something like
> this:
>
> Model:
> vy(t) = vy(t) + ay * dt
> y(t) = y(t) + vy(t) * dt
> x(t) = x(t) + vx(t) * dt
> t = t + dt
>
> Initial conditions:
> ay = 9.8
> vy = 120
> vx = 60
> t = 0
> dt = 0.1
>
> It is primarily intented to teach students how a mathematical model
> works. There are several proprietary programs available. In the
> Netherlands, probably all high schools use the program Coach for driving
> experiments, doing modelling, etc. in physics, chemistry and biology. It
> is a dutch program, so probably very few of you will have heard of it.
>
> I think it may be possible to do this in basically every algebra system,
> like octave, yacas, etc. but I'd like to do this as easily as possible.
> Any suggestions? Thanks!
>
> David
>
> --
> Hi! I'm a .signature virus. Copy me into
> your ~/.signature to help me spread!