MathGroup Archive: February 2009 [00808]

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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

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