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Topic: fitting differential eq. to data
Replies: 1   Last Post: Aug 22, 1996 3:31 AM

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 Thomas Hamelryck Posts: 2 Registered: 12/7/04
fitting differential eq. to data
Posted: Aug 21, 1996 2:08 AM

Dear Mathematica experts,

We are struggling with the following problem :

we have a system of three linear differential equations in three variables
(x,y,z) with three unknown parameters (p,q,r) :

x'=-px+qy
y'=px-(q+r)y
z'=ry

We have a set of measurements (x,y,z,t). Now we want to optimize the
parameters p,q and r so that the solutions of the diff. equations
approximate the experimental data as close as possible.

Does anybody know if this can be done with Mathematica? Hints or suggestions
are very wellcome!
If there are other mathematical packets out there that are more suited for
solving the problem, please let us know.

--
Thomas Hamelryck
Laboratorium voor Ultrastructuur
Vlaams Interuniversitair Instituut voor Biotechnologie
Vrije Universiteit Brussel
Paardenstraat 65
B-1640 St-Genesius-Rode
Tel: 32-2-3590209
Fax: 32-2-3590289
Belgium

Date Subject Author
8/21/96 Thomas Hamelryck
8/22/96 Christian Jost