Thread View: sci.math.num-analysis
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Started by Jon
Mon, 02 Aug 2004 13:46
All Roots to any Polynomial
Author: Jon
Date: Mon, 02 Aug 2004 13:46
Date: Mon, 02 Aug 2004 13:46
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In this development all roots to any degree polynomial are found to any desired degree of precision. http://www.geocities.com/jongiff2000/a7_polynomial_roots_bingo.html Jon Giffen
Re: All Roots to any Polynomial
Author: Peter Pan
Date: Mon, 02 Aug 2004 19:17
Date: Mon, 02 Aug 2004 19:17
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Jon <jon8338@peoplepc.com> wrote in message news:<410E45F8.3090004@peoplepc.com>... > In this development all roots to any degree polynomial are found to any > desired degree of precision. > > http://www.geocities.com/jongiff2000/a7_polynomial_roots_bingo.html > > Jon Giffen WARNING !!! WARNING !!! WARNING !!! WARNING !!! Folks, this is plain nonsense. He can't even find roots for a simple polynomial of fifth degree: t^5 + t^2 + 1 = 0. So don't read his bullshit !!!
Re: All Roots to any Polynomial
Author: Proginoskes
Date: Tue, 03 Aug 2004 07:23
Date: Tue, 03 Aug 2004 07:23
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RMoebs1@compuserve.de (Peter Pan) wrote in message news:<3cc72195.0408021117.1c65bf67@posting.google.com>...
> Jon <jon8338@peoplepc.com> wrote in message news:<410E45F8.3090004@peoplepc.com>...
> > In this development all roots to any degree polynomial are found to any
> > desired degree of precision.
> >
> > http://www.geocities.com/jongiff2000/a7_polynomial_roots_bingo.html
> >
> > Jon Giffen
>
> WARNING !!! WARNING !!! WARNING !!! WARNING !!!
>
> Folks, this is plain nonsense. He can't even find roots for a simple
> polynomial of fifth degree: t^5 + t^2 + 1 = 0.
Forget polynomials of the fifth degree, his method couldn't even find roots
of a cubic which factors. (He gave one as HIS OWN EXAMPLE of his method
at work. I would have thought he'd post a polynomial where his method
worked.)
Checking the link, I see he's changed a few things. He doesn't explain
why you can't choose s = 1 and s = 2 as well. (Probably just because they
don't give valid answers, I bet. And he's doing his old "rounding off"
trick again, claiming it gives exact answers.)
-- Christopher Heckman
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