       Re: O.D.E in Power Series

• To: mathgroup at smc.vnet.net
• Subject: [mg18358] Re: O.D.E in Power Series
• From: Harald Giese <giese at dkrz.de>
• Date: Wed, 30 Jun 1999 14:13:25 -0400
• Organization: Institut fuer Meereskunde, Universitaet Hamburg
• References: <7ku0dk\$9a1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

```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?
>

Alan,

on Mathematica 3.0 for Solaris and Mathematica
4.0 for Windows it works, if the prime is
the  character with ASCII code 180 instead of code 39:

In:=
DSolve[y\.b4\.b4[x] - 2(x + 3)y\.b4[x] - 3y[x] == 0, y[x], x]

Out=
\!\({{y[x] -> 1\/3\ \((\(-6\)\ y\.b4[x] - 2\ x\ y\.b4[x] +
y\.b4\.b4[x])\)}}\)

Regards,
Harald

--
Harald Giese
Email: giese at dkrz.de
> NEUE TELEFON-NUMMER | NEW PHONE-NUMBER <
Phone: +49 (0)40 42838 5796; Fax: +49 (0)40 5605724
Institut fuer Meereskunde der Universitaet Hamburg
(Institute of Oceanography of the University of Hamburg)
Troplowitzstrasse 7, D-22529 Hamburg

```

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