A B B 0 2 ; * A B A2 B2 ; A BA = B ( A >...
17)
A
B
B
0
2
; *
A
B
A
2
B
2
;
A BA = B( A > 0 ; B > 0 )
A = B
2
2
3
3
1
1
x
x
1
1
x
x
A
B
B
0
2
A
B
A
2
B
2
A = B
2
2
3
3
1
1
x
x
1
1
x
x