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Re: Inverse of a Big Matrix

  • To: mathgroup at smc.vnet.net
  • Subject: [mg96850] Re: Inverse of a Big Matrix
  • From: dh <dh at metrohm.com>
  • Date: Thu, 26 Feb 2009 07:54:40 -0500 (EST)
  • References: <go31lo$fds$1@smc.vnet.net>


Ho Gregory,

look up "PseudoInverse" in the manual.

Daniel



Gregory Lypny wrote:

> 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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