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Topic: tridiagonal system
Replies: 3   Last Post: Apr 17, 2014 11:04 AM

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 Claus Skovgaard Posts: 44 Registered: 11/2/06
tridiagonal system
Posted: Apr 17, 2014 3:42 AM

I need a method for solving a linear system (x1..xn) of type

x1*(k11+k12/(x1+x2+..xn)) x2*k13 x3*k14 ....
... x2*(k22+k23/(x1+x2+..xn)) x3*k24 ....
... ..... x3*(k34+k35/(x1+x2+..xn))

and so on, size about 400 x 400 elements,
I am unable to find a solution with Thomas or similar efficient methods
cause diagonal elements contains K/(x1+x2+...+xn) which require separate processing,
what am I missing here ?
Is there any simple solution for these systems ?
Which procedure to adopt in Matlab?
Thanks for help.

Date Subject Author
4/17/14 Claus Skovgaard
4/17/14 John D'Errico
4/17/14 Claus Skovgaard
4/17/14 John D'Errico