Problem with inv function

[Héctor Garcia Peris]

Hello,

I am inverting a big matrix (60x60) using the inv function. The result of 
the inversion is a matrix with the first column with a number in the first 
row and the rest of the rows with zeros. I have inverted this matrix using 
other application and the result of the inversion is different, the first 
column doesn't have zeros in the whole column except the first row. The 
multiplication of the original matrix by each inverted matrix is the 
identity matrix, but I don't understand why the inverted matrix is 
different. Why octave produces this result?

Thanks.


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Héctor Garcia Peris
Dpto. Informática
Instituto Valenciano de Investigaciones Económicas S.A. (Ivie)
C/ Guardia Civil, 22 esc-2 1º 46020 - Valencia (Spain)
Tfno.: +34 - 963190050 / +34 - 963930816
Fax.: +34 - 963190055 / +34 - 963930856
e-mail: address@hidden
Web: http://www.ivie.es
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