Mon Feb 24 07:57:58 2020 

refmatrix_test
  R version 3.4.4 (2018-03-15) 
  refmatrix(A) computes the row echelon form (REF) of a matrix.


The matrix A:

     [,1] [,2] [,3]
[1,]    5    8    6
[2,]    5    2    5
[3,]    5    2    4

The REF of A:

     [,1] [,2] [,3]
[1,]    5    8    6
[2,]    0   -6   -1
[3,]    0    0   -1

The matrix B:

     [,1] [,2] [,3] [,4]
[1,]    2    4    3    7
[2,]    4    9    6    3
[3,]    2    4    7    9

The REF of B:

     [,1] [,2] [,3] [,4]
[1,]    2    4    3    7
[2,]    0    1    0  -11
[3,]    0    0    4    2

The matrix C:

     [,1] [,2] [,3]
[1,]    2    5    3
[2,]    8    1    8
[3,]    5    2    4

The REF of C:

     [,1]          [,2]      [,3]
[1,]    2  5.000000e+00  3.000000
[2,]    0 -1.900000e+01 -4.000000
[3,]    0  1.776357e-15 -1.289474

refmatrix_test
  Normal end of execution.
Mon Feb 24 07:57:58 2020