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MathGroup Archive 1992

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Re: Hello World

  • To: mathgroup at yoda.physics.unc.edu
  • Subject: Re: Hello World
  • From: pattyl
  • Date: Thu, 13 Aug 92 8:57:49 CDT

>	Hi, John

	I rec'd some answers to the questions you had yesterday
	regarding high order polynomials:

	Mathematica can handle high order polynomials (100+ for
	example) and find their multiple roots, though you will
	in most cases be limited to numeric roots, not symbolic
	or exact (rational).  (Also, this can take a fair amount
	of time/memory; it will vary depending on the polynomials, etc.)

	About the infinite loop/sum of rational polynomials:

	Our tech guy, John, did not know anything that would cause
	this; he asked if you were just adding some polynomials, or 
	using some other function, such as Solve, that could have
	large intermediate expressions that would take a very long
	time to evaluate, giving the appearance of an infinite loop.
	If it is a simple addition, it should be reported to support at wri.com,
	maybe there is a bug fix, or maybe it is know and will be fixed
	shortly, or maybe it needs to be made known.

	Hope this helps!
> 
> I am a NeXT computer user and the DSP person at Ensoniq Corp. in  
> Malvern PA.  We make music synthesizers and sound effect devices.
> 
> Has any one found a complex root finding algorithm for high order
> polynomials that works?!
> 
> JonD
> 
> 
> 






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