8 Apr
                
                    2014
                
            
            
                8 Apr
                
                '14
                
            
            
            
        
    
                6:47 p.m.
            
        Finaly, for the moment, i use the GSL - GNU Scientific Library whith the help of this link: http://www.gnu.org/software/gsl/manual/html_node/Linear-Algebra-Examples.htm... Its the same library used by 2GEOM in "linear_sistem.h"
Thanks very much for the help I get.
Regards, Jabier.