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MathGroup Archive 2005

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Re: ZTarnsform[Sin[4 n],n,z] OK, but ZTransform[Sin[5 n],n,z,] hangs?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg56812] Re: [mg56772] ZTarnsform[Sin[4 n],n,z] OK, but ZTransform[Sin[5 n],n,z,] hangs?
  • From: Chris Chiasson <chris.chiasson at gmail.com>
  • Date: Fri, 6 May 2005 03:01:16 -0400 (EDT)
  • References: <200505051003.GAA22072@smc.vnet.net>
  • Reply-to: Chris Chiasson <chris.chiasson at gmail.com>
  • Sender: owner-wri-mathgroup at wolfram.com

Same behavior on 5.0 Windows XP SP2

I suppose it would get an answer eventually

On 5/5/05, steve <nma124 at hotmail.com> wrote:
> Hello;
> This is Mathematica 5.1 on windows.
> 
> This is a strange one.
> 
> When I start Mathematica and type
> 
> ZTarnsform[Sin[4 n],n,z]
> 
> Then I get the answer.
> 
> but if replace '4' by '5' above, I see Mathematica starts
> to consume huge amount of memory untill the PC hangs running
> out of virtual RAM.
> 
> ZTarnsform[Sin[5 n],n,z]   <---- hangs
> ZTarnsform[Sin[4 n],n,z]   <---- ok
> 
> any one has any idea what is going on? is this some subtle
> mathemtical thing I am overlooking that is causing this?
> what is so special about '5' here?
> 
> thanks,
> Steve
> 
> 


-- 
Chris Chiasson
http://chrischiasson.com/
1 (810) 265-3161


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