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Re: [Help-gsl] Ax=b

From: Brian Gough
Subject: Re: [Help-gsl] Ax=b
Date: Sun, 30 Nov 2003 18:51:33 +0000

address@hidden writes:
 > Other question: how can I solve linear system A x = b with indinite
 > solutions?
 > For example: we suppose to have:
 > x+2y+3z=3 2x+3y+8z=4
 > Thi system have infinite solutions:
 > x=-1-7t y=2+2t z=t t in R
 > Can i use gsl_linalg_LU_solve or gsl_linalg_complex_LU_solve to
 > solve this kind of linear system?

The LU routines only work with non-singular matrices.
Look at other matrix decompositions such as the SVD.

Brian Gough

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