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MathGroup Archive 2006

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Re: Solving the Cubic

  • To: mathgroup at
  • Subject: [mg71920] Re: Solving the Cubic
  • From: "dimitris" <dimmechan at>
  • Date: Mon, 4 Dec 2006 06:38:46 -0500 (EST)
  • References: <ekrk1a$rog$>

See also here

Mark Harder wrote:
> Dimitris,
> 	Symbolic solutions can be very error- and precision- sensitive (See
> Press, et al, "Numerical Recipes.." for a trick that stabilizes quadratic
> solutions.)  Do you know if Vieta's method designed to avoid numeric
> instabilities?
> Mark Harder
> -----Original Message-----
> From: dimitris [mailto:dimmechan at]
> Sent: Friday, December 01, 2006 3:22 AM
> Subject:  Solving the Cubic
> The following cell follows the Vieta's method for solving the cubic
> equation complete with all the necessary steps and text explanations.
> I really appreciate any kind of comments.
> (code omitted ).

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