> C:=matrix(3,3,[1,0,0,0,1,0,0,0,1]); 

                              [1  0  0]


                              [       ]


                         C := [0  1  0]


                              [       ]


                              [0  0  1]

> B:=inverse(transpose(matrix(3,3,[14,0,2,0,1,0,2,4,3])));

                            [3       -1]


                            [--  0   --]


                            [38      19]


                            [          ]


                            [4      -28]


                       B := [--  1  ---]


                            [19     19 ]


                            [          ]


                            [-1      7 ]


                            [--  0   --]


                            [19      19]