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## Re: Problem with inv function

**From**: |
Victor Eijkhout |

**Subject**: |
Re: Problem with inv function |

**Date**: |
Mon, 30 Sep 2002 13:16:46 -0400 |

At 17:10 +0200 2002/09/30, Héctor Garcia Peris wrote:

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.
`

Let me guess. The other rows contain really small elements.

`Print out the submatrix that you get by leaving out the first row.
``Now are the rows still zero?
`

` 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,
`

I hope you see that that is not possible.
--
Victor Eijkhout <address@hidden>
tel: 865 974 9308 (W), 865 673 6998 (H), 865 974 8296 (F)
http://www.cs.utk.edu/~eijkhout/
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