MathGroup Archive 2003

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: ill-conditioned matrix

  • To: mathgroup at
  • Subject: [mg43474] Re: ill-conditioned matrix
  • From: "Robert Nowak" <robert.nowak at>
  • Date: Thu, 18 Sep 2003 05:38:37 -0400 (EDT)
  • References: <bk9jvu$2d$>
  • Sender: owner-wri-mathgroup at

suppose you have the matrix equation below

even if m is singular the following will give a unique  and perhaps
meaningful solution

will even work with rectangular (non square) matrices in this case the
solution will be the least square solution to the over / under determined
system (linear least square fit equivalent).

regards robert

"arash yavari" <arashkhan at> wrote in message
news:bk9jvu$2d$1 at
> Hello,
> Does anybody know what the best way of multiplying
> ill-conditioned matrices in Mathematica is? I also
> need to solve a linear system with an ill-conditioned
> representing matrix. What is the most efficient and
> accurate way of doing this by Mathematica? Thanks!
> Regards,
> Arash
> __________________________________
> Do you Yahoo!?
> Yahoo! SiteBuilder - Free, easy-to-use web site design software

  • Prev by Date: Re: NSolve fails where Solve succeeds!
  • Next by Date: RE: FileBrowse command
  • Previous by thread: ill-conditioned matrix
  • Next by thread: Re: ill-conditioned matrix