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Topic: roots to *any* polynomial
Replies: 7   Last Post: Jun 18, 2010 5:43 PM

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 Dik T. Winter Posts: 7,899 Registered: 12/6/04
Re: roots to *any* polynomial
Posted: Nov 27, 2009 9:42 AM

In article <WvWdnfq9rP0sVJPWnZ2dnUVZ_t6dnZ2d@earthlink.com> "Jon" <jon8338@peoplepc.com> writes:
> http://jons-math.bravehost.com/rootformula.html
>
> This solution for the roots of *any* polynomial requires some manipulation
> of complex numbers. An example for the solutions to the Pentic is provided.

Take for your quintic a = b = 1, c = -2. Your formula gives:

x = {{3^(1/5) - 2}^(1/4)

which not even close to the actual root of 1.
--
dik t. winter, cwi, science park 123, 1098 xg amsterdam, nederland, +31205924131
home: bovenover 215, 1025 jn amsterdam, nederland; http://www.cwi.nl/~dik/

Date Subject Author
11/26/09 Jon G
11/26/09 g.resta@iit.cnr.it
11/27/09 Jon Slaughter
11/27/09 g.resta@iit.cnr.it
11/27/09 Brian Smith
11/27/09 Dik T. Winter
12/3/09 ostap_bender_1900@hotmail.com
6/18/10 lafonque