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MathGroup Archive 1999

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Re: O.D.E in Power Series

  • To: mathgroup at smc.vnet.net
  • Subject: [mg18307] Re: O.D.E in Power Series
  • From: Attico Nicola <attico at cibs.sns.it>
  • Date: Fri, 25 Jun 1999 22:24:15 -0400
  • Organization: Universita' di Pisa
  • References: <7ku0dk$9a1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

On 24 Jun 1999, ALAN S BLOOM wrote:

> I am trying to solve this equation below:
> y''-2(x+3)y'-3y=0 with the DSolve command.
> 
> DSolve [y''[x]-2(x+3)y'[x]-3y[x]==0,y[x],x]
> 
> How can I make it work?

I Alan

sorry but i dont know how to solve
your problem.
I write only because i understand your
sense of frustration!
Im absolutely sure that the differential
equation you are trying to ndsolve is
solvable in terms of some type of special
function (maybe Kummer functions) but,
as you say, NDSolve is not able to solve
it and i dont understand why because sometimes
this package is able to solve very more
complicated equations!
This make me very unhappy...



-----
Nicola Attico
(attico at cibs.sns.it)




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