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

  • To: mathgroup at smc.vnet.net
  • Subject: [mg86166] Hi, please help to resolve this time delay problem. thanks in
  • From: foxvexon <yulinwei at gmail.com>
  • Date: Tue, 4 Mar 2008 02:08:59 -0500 (EST)

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!


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