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MathGroup Archive 1999

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Re: Coupled Diff Eqn

  • To: mathgroup at
  • Subject: [mg15940] Re: Coupled Diff Eqn
  • From: Paul Abbott <paul at>
  • Date: Wed, 17 Feb 1999 23:34:05 -0500
  • Organization: University of Western Australia
  • References: <7a29kd$>
  • Sender: owner-wri-mathgroup at

Scubaflyer wrote:

> Is there a way to solve the following equation in Mathematica (1st der
> => ' , 2nd Der '' )
> P1' [t] - P2' [t] = A x '' [t] + B x' [t] + C x[t]
> knowing:
>   A, B,C, x[0], x' [0], P1 [0], P2[0]

To solve the equation, as stated, you either need to know P1[t] and
P2[t] or have their differential equations (giving you a coupled set of
3 differential equations).

Paul Abbott                                   Phone: +61-8-9380-2734
Department of Physics                           Fax: +61-8-9380-1014
The University of Western Australia           
Nedlands WA  6907                     mailto:paul at 

            God IS a weakly left-handed dice player

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