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Article #871

Re: Help required to solve a system of non-linear Eq.,s

#871
From: samer Takriti
Date: Wed, 18 Nov 1992 17:48
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In article <1992Nov18.024417.19684@oucsace.cs.ohiou.edu> ravi@bobcat.ent.ohiou.edu (Pattalachinti) writes:
>Are there any thumb-rules for the successful execution of
>Newton-Raphson method to work successfully on a non-linear
>system of equations.
>
>Any suggestion is welcome,
>
>Thanking in advance,
>
>Ravi 

I think that what you are looking for is "Kantarovitch theorem". It states
that if the function is continuously differentiable, the norm of the e
inverse of the Jacobian is less than beta, and the norm of the (J^{-1}F(x))
is less than eta (J is the jacobian) then
if alpha * beta * eta <= .5 then the sequence converges.
F is lipschitz continuous with constant alpha.
-Samer
 
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Newsgroups: sci.math.num-analysis
Path: arc1-ca.pugleaf.net!sparky!uunet!caen!takriti
From: takriti@engin.umich.edu (samer Takriti)
Subject: Re: Help required to solve a system of non-linear Eq.,s
Message-ID: <k5F=yL=@engin.umich.edu>
Date: Wed, 18 Nov 92 12:48:52 EST
Organization: University of Michigan Engineering, Ann Arbor
References: <1992Nov18.024417.19684@oucsace.cs.ohiou.edu>
Keywords: Newton - Raphson method(currently used)
Nntp-Posting-Host: ephedra.engin.umich.edu
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