apl>" <------------------------- sam083.txt ---------------------------->


apl>" <--- Matrix Inverse and Matrix Divide Functions ------------------>


apl>M L # a # (I 4) J . Z I 4

1 0 0 0
1 1 0 0
1 1 1 0
1 1 1 1

 1  0  0 0
-1  1  0 0
 0 -1  1 0
 0  0 -1 1

apl>a +.X M a

1 0 0 0
0 1 0 0
0 0 1 0
0 0 0 1

apl>L # x # (b # 1 3 6 10) M a

1 2 3 4


apl>a +.X x

1 3 6 10

apl>(M a ) +.X b

1 2 3 4

apl>)off