2006-2007
24
2x 1 2 3
3x x 1 2
4
1. f ( x)
x
1 1 2 x 1
0 1 3 x x
2.
3
x
1 (1, 2,3, 4)T , 2 (2,3, 4,5)T , 3 (3, 4,5, 6)T , 4 (4,5, 6, 7)T
1
2
3. A
1
2
3
4
r ( A) 4 a
5
4
4. AB 3 E B AB A 230 B
1
2
0
a
2
0
a
3
2
a
1
5
1 1 3
5. f ( x1 , x2 , x3
2006-2007
20
1. ABC n AB BC CA E A B C
2
a1b1 a1b2
a2b1 a2b2
2. n B
an b1 anb2
r ( B)
2
2
a1bn
a2bn
ai 0, (i 1, 2, , n), b j 0, ( j 1, 2, , n)
a1b1
1
3. A n A 2 A 4 E 0, ( A E )
2
4. 1 (1, 0, 1, 2) , 2 (2, 1, 2, 6) , 3 (3,1, a, 4) , (4