Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2009

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

Search the Archive

Inverse of a Big Matrix

  • To: mathgroup at smc.vnet.net
  • Subject: [mg96814] Inverse of a Big Matrix
  • From: Gregory Lypny <gregory.lypny at videotron.ca>
  • Date: Wed, 25 Feb 2009 04:06:30 -0500 (EST)

Hello everyone,

I'm computing the inverse of a big matrix, 500 x 500.  Well, maybe not  
that big, but I'm getting the error message

	"General::luc: Result for `1` of badly conditioned matrix `2` may  
contain significant numerical errors. >>"

and I'm wondering if anyone can suggest a workaround.  All I can say  
is that the determinant is very small (-4.327475016428501*10^-1947),  
and that I can compute the inverse of various submatrices of size 100  
x100.

Regards,

	Gregory


  • Prev by Date: Creating TOC with Mathematica 7
  • Next by Date: HoldForm[1*2*3] should give 1 x 2 x 3 not 2 x 3
  • Previous by thread: Re: Creating TOC with Mathematica 7
  • Next by thread: Re: Inverse of a Big Matrix