- **Differential Equations**
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- - **Runge Kutta -coupling problem**
(*http://www.physicsforums.com/showthread.php?t=505803*)

Runge Kutta -coupling problemHi,
I am trying to use the Runge-Kutta method for a problem that looks like this: dy/dt= f(u,v,r) where y= r*L I was wondering if dy/dt can be a function of more than 2 independent variables? Also do I need to do some kind of uncoupling of r and L? (I think L can be in a way expressed in terms of u and v but that would make things even more complicated I guess. ) Thanks, H |

Re: Runge Kutta -coupling problemRunge-Kutta works for only 1 independent variable, i.e
t in this problem. Ultimately, u, v, r, L must all be expressed as functions of t for Runge-Kutta to work. |

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