4. 4
1 2 3
1 2
2 3
(1,1,1), (2,3,4), (3,0, 1)
(2 1) (3 1) (4 1)
2 3
(3 2) (0 3) ( 1 4)
3 5
P P P
i J k
i j k
i J k
i j k
P P
P P
5. 5
1 2 2 3
2 3
4
,
1 2 3
1 3 5
( 1) ( 10 9) ( 1) ( 5 3)
( 1) ( 3 2) 8 5
Now
i j k
X
i X j X
k X i j k
P P P P
6. 6
1 2 2 3 8 5
1 64 25 90 3 10
1 3
3 10 10
2 2
and
X i j k
A X
P P P P