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MathGroup Archive 2006

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Re: extract homogenous solution from DSolve?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg69453] Re: extract homogenous solution from DSolve?
  • From: "ben" <benjamin.friedrich at gmail.com>
  • Date: Wed, 13 Sep 2006 04:01:27 -0400 (EDT)
  • References: <ee63rg$531$1@smc.vnet.net>

Dear Anim,

Can you provide an example to illustrate your question?

As a first guess, I suggest you to check whether you
supplied initial conditions.
If they are specified, the constants within the homogenous
solution will be solved for to match them.
See below.

Bye
Ben

(* no initial condition : homogenous solution *)
DSolve[{x'[t]\[Equal]0},
  x[t],t]

Out[1]=
{{x[t]\[Rule]C[1]}}

(* initial condition : particular solution *)
DSolve[{x'[t]\[Equal]0,
    x[0]\[Equal]0},x[t],t]

Out[2]=
{{x[t]\[Rule]0}}

Tanim Islam schrieb:

> Hi:
>
> I was wondering how to extract the homogenous solution (rather than the
> exact or particular solution) when employing DSolve? Thanks.
> 
> Tanim Islam


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