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From "Luc Maisonobe (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MATH-960) ODE integrator do not handle some additional equations properly
Date Tue, 02 Apr 2013 13:55:19 GMT
Luc Maisonobe created MATH-960:
----------------------------------

             Summary: ODE integrator do not handle some additional equations properly
                 Key: MATH-960
                 URL: https://issues.apache.org/jira/browse/MATH-960
             Project: Commons Math
          Issue Type: Bug
    Affects Versions: 3.1.1
            Reporter: Luc Maisonobe
            Assignee: Luc Maisonobe
             Fix For: 3.2


Differential equations may be split as a primary equation and several secondary equations.
In some cases, the secondary equations may have an effect on he primary derivatives. This
can be handled using the method computeDerivatives(double t, double[] primary, double[] primaryDot,
double[] secondary, double[] secondaryDot) from the SecondaryEquations interface.

However, when the secondary equations updateds the primaryDot array using this method, the
update is ignored.


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