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Re: Hi, please help to resolve this time delay problem. thanks in

• To: mathgroup at smc.vnet.net
• Subject: [mg86191] Re: Hi, please help to resolve this time delay problem. thanks in
• From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
• Date: Wed, 5 Mar 2008 03:40:50 -0500 (EST)
• References: <fqisu7$mbs$1@smc.vnet.net>

Hi,

http://library.wolfram.com/infocenter/MathSource/725/

may help.

Regards
   Jens

foxvexon wrote:
> Recently, I am trying to build up a model involving resolving some
> time delay problem like the follow (for a simple example):
> 
> NDSolve[{x[t] == t, y[t] == x[t + 2], x[0] == 0}, {x, y}, {t, 1, 2}]
> 
> For this one, anybody can easily figure out the solution even at first
> glance, but Mathematica replies me with
> 
> NDSolve::ndinnt: "Initial condition Automatic[1.] is not a number or a
> rectangular \
> array of numbers".
> 
> Could anybody give me a help?
> Merci beaucoup!
>