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How to improve the solution of a two differential equations system?

-MFra-
21-Topaz I

How to improve the solution of a two differential equations system?

Hello everyone,
how do i get the same solutions of the system in two differential equations, changing the odesolve algorithm since they vary as it changes? It's possible?

I thank you all.

Greetings.

two eqdif system.jpg

1 ACCEPTED SOLUTION

Accepted Solutions
AlanStevens
15-Moonstone
(To:-MFra-)

If you do a little rescaling you find the result is independent of the algorithm.

g0.png

View solution in original post

3 REPLIES 3
ttokoro
17-Peridot
(To:-MFra-)

The shape is depend on TOL= 10-1 to 10-7. Prime 7.

image.png

AlanStevens
15-Moonstone
(To:-MFra-)

If you do a little rescaling you find the result is independent of the algorithm.

g0.png

View solution in original post

Your results are the same as those obtained with the "Fixed" or "Adaptive" algorithms so I choose one of the two without changing anything. Anyway, thank you very much for the helpful advice.

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