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Re: difference equation

• To: mathgroup at smc.vnet.net
• Subject: [mg24348] Re: difference equation
• From: "Seth Chandler" <SChandler at uh.edu>
• Date: Sun, 9 Jul 2000 04:52:52 -0400 (EDT)
• Organization: University of Houston
• References: <8k3l8a$3af@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

You need to load the package DiscreteMath`RSolve. You can then use the
command RSolve, which looks a lot like DSolve (for differential equations).
Then try:

RSolve[y[t] == a + b y[t - 1] + y[t - 2], y[t], t]


"Wilfried Stock" <stock at wirtschaft.uni-kassel.de> wrote in message
news:8k3l8a$3af at smc.vnet.net...
>
> Hi
> I would like to built a difference equatition like:
> Yt=A+b*Yt-1-c*Yt-2
> with Y=f(X)
> I don't find an easy solution.
> Can anyone provide a solution?
>
>
> Thanks in advance,
> Wilfried
>