# berprfung der Matrix [A] in Gl. (6.54):
> with(linalg):
> A:=inverse(matrix(4,4,[1,0,0,0,0,1,0,0,1,l,l^2,l^3,0,1,2*l,3*l^2]));

                   [  1         0        0         0  ]
                   [                                  ]
                   [  0         1        0         0  ]
                   [                                  ]
                   [   3                 3            ]
                   [- ----    - 2/l     ----     - 1/l]
              A := [    2                 2           ]
                   [   l                 l            ]
                   [                                  ]
                   [  2        1          2       1   ]
                   [ ----     ----     - ----    ---- ]
                   [   3        2          3       2  ]
                   [  l        l          l       l   ]

# Damit ist das Ergebnis aus (6.54a,b) berprft!
> 
