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Integrating Differential Equations with Time Delay

• To: mathgroup at smc.vnet.net
• Subject: [mg75534] Integrating Differential Equations with Time Delay
• From: "Haider Arafat" <harafat at vt.edu>
• Date: Fri, 4 May 2007 04:17:11 -0400 (EDT)
• Organization: Virginia Tech

I am not able to use NDSolve to integrate a differential equation of the 
form

u''(t) + a u(t) == b u(t-tau);
u(0) == u0;
u'(0)==udot0;

where tau, a, and b are all constants. Is there any way to numerically 
integrate this type of equations
in Mathematica.

Any help is appreciated,

Haider Arafat 

• Follow-Ups:
  • Re: Integrating Differential Equations with Time Delay
    • From: Murray Eisenberg <murray@math.umass.edu>