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MathGroup Archive 2006

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Re: solve differential equation problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg68856] Re: solve differential equation problem
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Mon, 21 Aug 2006 03:28:24 -0400 (EDT)
  • References: <ec97dc$4b3$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

can you explain your problem by an example ?
that is *not* solved by Mathematica *and*
produce the error message below ??

Regards
   Jens

elvis wrote:
> Here we often use mathematica to solve differential equations, when I
> encouter a equation with several constrains I set them to those values.
> But it cannot solve it and have the following warnings:
> 
>     DSolve::deqx: Supplied equations are not differential equations of
> the given functions.
> 
> Give a very simple differential equation here:
> 
>   DSolve[{y'[x] == r*y[x], y[0] == a}, y, x]
> 
> Can anyone help to "solve" this problem for me?
> Thanks!
> 


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