ASKSAGE: Sage Q&A Forum - Individual question feedhttp://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Mon, 11 Apr 2011 17:01:22 -0500difference equationshttp://ask.sagemath.org/question/8067/difference-equations/Hello all,
I was wondering about SAGE capabilities in solving coupled systems of difference equations; I don't see any z-transform capabilities so I think this may not be possible yet.
Ruy LopezSun, 10 Apr 2011 07:43:46 -0500http://ask.sagemath.org/question/8067/difference-equations/Answer by Ruy Lopez for <p>Hello all, </p>
<p>I was wondering about SAGE capabilities in solving coupled systems of difference equations; I don't see any z-transform capabilities so I think this may not be possible yet.</p>
<p>Ruy Lopez</p>
http://ask.sagemath.org/question/8067/difference-equations/?answer=12283#post-id-12283See http://en.wikipedia.org/wiki/Z-transform for the z-transform (used frequently in discrete signal processing). Not seeking solutions to differential equations! I need to solve systems of coupled difference equations (the same wiki link describes difference equations too). Memory limitations in Mathematica and Maple, limit explicit solutions to about 4 coupled difference equations and I was hoping to solve 5 or more such equations with SAGE, after seeing some of it's capabilities on the benchmark page. Sun, 10 Apr 2011 10:13:09 -0500http://ask.sagemath.org/question/8067/difference-equations/?answer=12283#post-id-12283Comment by Shashank for <p>See <a href="http://en.wikipedia.org/wiki/Z-transform">http://en.wikipedia.org/wiki/Z-transform</a> for the z-transform (used frequently in discrete signal processing). Not seeking solutions to differential equations! I need to solve systems of coupled difference equations (the same wiki link describes difference equations too). Memory limitations in Mathematica and Maple, limit explicit solutions to about 4 coupled difference equations and I was hoping to solve 5 or more such equations with SAGE, after seeing some of it's capabilities on the benchmark page. </p>
http://ask.sagemath.org/question/8067/difference-equations/?comment=21875#post-id-21875Oh sorry about that.Sun, 10 Apr 2011 10:31:14 -0500http://ask.sagemath.org/question/8067/difference-equations/?comment=21875#post-id-21875Comment by kcrisman for <p>See <a href="http://en.wikipedia.org/wiki/Z-transform">http://en.wikipedia.org/wiki/Z-transform</a> for the z-transform (used frequently in discrete signal processing). Not seeking solutions to differential equations! I need to solve systems of coupled difference equations (the same wiki link describes difference equations too). Memory limitations in Mathematica and Maple, limit explicit solutions to about 4 coupled difference equations and I was hoping to solve 5 or more such equations with SAGE, after seeing some of it's capabilities on the benchmark page. </p>
http://ask.sagemath.org/question/8067/difference-equations/?comment=21859#post-id-21859For exact solutions to difference equations, you may want to see whether Maxima has what you are looking for (which you could use directly or from within Sage). Mon, 11 Apr 2011 17:01:22 -0500http://ask.sagemath.org/question/8067/difference-equations/?comment=21859#post-id-21859Answer by Shashank for <p>Hello all, </p>
<p>I was wondering about SAGE capabilities in solving coupled systems of difference equations; I don't see any z-transform capabilities so I think this may not be possible yet.</p>
<p>Ruy Lopez</p>
http://ask.sagemath.org/question/8067/difference-equations/?answer=12282#post-id-12282Hi,
I don't know what you mean by z-transform (Do you mean discrete fourier transform?), but you can solve coupled differential equations numerically in sage. Have a look at
http://ask.sagemath.org/question/162/is-there-a-way-to-solve-a-differential-equation-in
Sun, 10 Apr 2011 08:33:41 -0500http://ask.sagemath.org/question/8067/difference-equations/?answer=12282#post-id-12282