difference equations
 
  
 
  
 
 
 
 
 
 
    
        
        asked 14 years ago  
 
 Ruy Lopez gravatar image  
 
 
 
 
    
        
        updated 13 years ago  
 
 Kelvin Li gravatar image  
 
 
 
 
 
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 Lopez
 
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Hi,
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/...
Shashank gravatar imageShashank (
    
        14 years ago
    )
See 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. 
Ruy Lopez gravatar imageRuy Lopez (
    
        14 years ago
    )
Oh sorry about that.
Shashank gravatar imageShashank (
    
        14 years ago
    )
For 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). 
kcrisman gravatar imagekcrisman (
    
        14 years ago
    )
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