Mathc matrices/c101d


Sommaire


Installer et compiler ces fichiers dans votre répertoire de travail.


Crystal Clear mimetype source c.png gj_s2.c
'
/* ------------------------------------ */
/*  Save as :   gj_s2.c             */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
void fun(int r)
{
double **Ab = r_singular_Ab_mR(i_Abr_Ac_bc_mR(r,r,C1),999);
double **A  = c_Ab_A_mR(Ab,i_mR(r,r));
double **b  = c_Ab_b_mR(Ab,i_mR(r,C1));


  clrscrn();
  printf(" A :");
  p_mR(A,S8,P0,C7);
  printf(" b :");
  
  r_mR(b,999.);                        /* I change the value of b */
  
  p_mR(b,S8,P0,C7); 
  printf(" Ab :");
  p_mR(c_A_b_Ab_mR(A,b,Ab),S8,P0,C7);
  stop();

  clrscrn();
  printf(" Copy/Past into the octave window.\n\n");
  p_Octave_mR(Ab,"Ab",P0);
  printf("\n rref(Ab,.00000000001)\n\n");
  stop();

  clrscrn();
  printf(" gj_mR(Ab) :");
  gj_PP_mR(Ab,YES);
  p_mR(Ab,S10,P5,C7);
  
  is_system_consistent_mR(Ab);

  f_mR(Ab);
  f_mR(b);
  f_mR(A);
}
/* ------------------------------------ */
int main(void)
{
time_t t;

  srand(time(&t));
do
{
  fun(rp_I(R5)+R1);


} while(stop_w());

  return 0;
}
/* ------------------------------------ */
/* ------------------------------------ */


Nous calculons la distance entre les deux matrices.


Exemple de sortie écran :
 ------------------------------------ 
 A :
    -255     -569      -35     -391     -155 
    +380     +426     +622     -899     -779 
    -497     -429     -509     -655      +20 
    +380     +426     +622     -899     -779 
    +380     +426     +622     -899     -779 

 b :
    +424 
     +80 
    +208 
    +734 
    +606 

 Ab :
    -255     -569      -35     -391     -155     +424 
    +380     +426     +622     -899     -779      +80 
    -497     -429     -509     -655      +20     +208 
    +380     +426     +622     -899     -779     +734 
    +380     +426     +622     -899     -779     +606 

 Press return to continue. 



 Copy/Past into the octave window.

 Ab=[
-255,-569,-35,-391,-155,+424;
+380,+426,+622,-899,-779,+80;
-497,-429,-509,-655,+20,+208;
+380,+426,+622,-899,-779,+734;
+380,+426,+622,-899,-779,+606]


 rref(Ab,.00000000001)

 Press return to continue. 



 gj_mR(Ab) :
  +1.00000   +0.00000   +0.00000   +8.74503   +3.88021   -1.38717 
  +0.00000   +1.00000   -0.00000   -2.93820   -1.29837   -0.19161 
  +0.00000   +0.00000   +1.00000   -4.77563   -2.73372   +1.10732 
  +0.00000   +0.00000   +0.00000   -0.00000   +0.00000 +654.00000 
  +0.00000   +0.00000   +0.00000   -0.00000   +0.00000 +526.00000 

 This(ese) row(s) are incompatible.
 row 4;   row 5;  
 The system is inconsistent. 
 I prefer to close the program.
 Press return to continue.