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

Out[2]=
\!\({{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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