The Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.


Math Forum » Discussions » sci.math.* » sci.math

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

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Dik T. Winter

Posts: 7,899
Registered: 12/6/04
Re: roots to *any* polynomial
Posted: Nov 27, 2009 9:42 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

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/



Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2017. All Rights Reserved.