Re: Integrating Differential Equations with Time Delay
- To: mathgroup at smc.vnet.net
- Subject: [mg75582] Re: Integrating Differential Equations with Time Delay
- From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
- Date: Sat, 5 May 2007 06:12:43 -0400 (EDT)
- Organization: The Open University, Milton Keynes, UK
- References: <f1eqpt$59j$1@smc.vnet.net>
Haider Arafat wrote: > 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 Allan Hayes's package NDelayDSolve should be of interest: "The package extends the built-in function NDSolve to deal with delay differential equations." See "Delay-Differential Equations" at http://library.wolfram.com/infocenter/MathSource/725/ Regards, Jean-Marc