On Wed, Aug 4, 2010 at 12:18 PM, ?????? ???? (Nemanja Ilic) < nemanja.ilic.81 at gmail.com> wrote:
> Hello, > > Thank you for you previous help. I wrote the code for calculating matrix > determinant and inverse matrix and they don't break anymore. Still I have > problems. I try to find determinant in the following way: First get LU > factor of a matrix and then multiply it's diagonal elements. I don't get > correct results. Could you tell me wheather the problem That description does not help. What do you get? What is the correct answer? Did you try it on a small problem that you can factor by hand? > is maybe in info structure? What information do you need to be able to help > me? I find the inverse matrix in the following way: I create linear problem > A * X = B where A is the input matrix, X is the inverse matrix, and B is > identity matrix. I solve it using MatMatSolve. Could you possibly help me > and what info do you need? > That should work. Matt > Thank you in advance, > Best regards, > Nemanja > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20100804/ca41fbdf/attachment.htm>
