Graphing Difference Equation
- To: mathgroup at smc.vnet.net
- Subject: [mg91393] Graphing Difference Equation
- From: Walkman <uvnarae at hotmail.com>
- Date: Wed, 20 Aug 2008 04:03:02 -0400 (EDT)
Dear Group.
I have a trouble in graphing differece equation using mathematica.
For instance, I get a difference equation,
y_{t} = 1.5y_{t-1} - .5y_{t-2} = 0
Since I don't know how to input the code for graphics and just want
to check how the graph looks like,
I input the solution instead, A(-1.2)^t + B(.5)^t where A and B
constants
For simplicity, I choose A = B = 1.
Plot[(-1.2)^t + (.5)^t,{t,0,20}]
The problem is that it doesn't work at all.
If anyone who know exact way to graph difference equation, plz
tell me.
Thanks in advance.