help in using AUTO

Article View: sci.math.num-analysis

Article #59

Back to sci.math.num-analysis Previous Next

#59

From: Cheng-Tang Lee
Date: Mon, 02 Nov 1992 18:42

20 lines
1028 bytes

Hi, I'm having trouble in solving the equation:

  x''(t) + sin(x(t)) = A sin( w t)

by the package, AUTO.  I don't have problem with the free response:

  x''(t) + sin(x(t)) = 0

and I use the following two equations for the forcing function, sin(w t):

  u1' = u1 + w u2 - u1 (u1^2+u2^2)
  u2' = -w u1 + u2 - u2 (u1^2+u2^2)

, thus u1 = sin(w t).

Everything works fine until I couple the free responce with the forcing  
function.  Can anyone help me with this?  Please send your reply to my  
e-mail address:  leecheng@liapunov.eecs.umich.edu.  Thanks.

James Lee

Technical Details

Message-ID: <1992Nov2.184248.14081@zip.eecs.umich.edu>

Path: arc1-ca.pugleaf.net!sparky!uunet!charon.amdahl.com!pacbell.com!decwrl!olivea!spool.mu.edu!umn.edu!umeecs!news

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!sparky!uunet!charon.amdahl.com!pacbell.com!decwrl!olivea!spool.mu.edu!umn.edu!umeecs!news
From: leecheng@hamilton.eecs.umich.edu (Cheng-Tang Lee)
Newsgroups: sci.math.num-analysis
Subject: help in using AUTO
Keywords: AUTO
Message-ID: <1992Nov2.184248.14081@zip.eecs.umich.edu>
Date: 2 Nov 92 18:42:48 GMT
Sender: news@zip.eecs.umich.edu (Mr. News)
Organization: University of Michigan EECS Dept., Ann Arbor, MI
Lines: 20