RSolve
- To: mathgroup at smc.vnet.net
- Subject: [mg35140] RSolve
- From: Matthias.Bode at oppenheim.de
- Date: Tue, 25 Jun 2002 19:55:31 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Hello Andrew,
straight from the Help Browser:
1.) y = a, t = n.
2.) Input:
RSolve[a[n + 2] - 2*a[n + 1] + 3*a[1] == 4, a[n], n]
3.) Output:
{{a[n] ->
If[n >= 1,
n
2 (-2 + 2 ) -
n
(-3 + 2 ) C[1], 0]}}
Simple, isn't it?
Best regards,
Matthias Bode.
I'm new to Mathematica and am having trouble with inputting the
equations I'm looking to solve. I know the basic input of RSolve, but
can't quite get it. Here's a sample problem, if anyone could show me
how to input into RSolve I can probably run with the ball after that.
y(t+2) - 2Y(t+1) + 3Y(1) = 4
With the part in brackets being a subscript denoting time. I know it
sounds dumb, but I just don't know the input notatin well enough to
get a problem typed in correctly, and the Mathematica book is a little
overwhelming.
Any help greatly appreciated!
Andrew