1 2 3 4
A =
1 1 1 1
1 2 3 4 5 6 7 8 9 10
A =
2 4 6 8 10 12 14 16 18 20
3 6 9 12 15 18 21 24 27 30
1 2 3 4 5
3 2 1 0 -1
A =
1 2 3 4 5
1 1 1 1 1
2 4 6 8
D =
0 1 2 3
4 3 2 1
 n × n
n × m
[0, 1]
EX = 0 V = 1
x1, x2 x1, x2, n
x1 x2
x1, x2 x1, x2, n
1 2
10x 10x
1 2 3 4 5 6
A =
6 5 4 3 2 1
1 1 2 2 3 3
i j
2 3 4
ans=
5 4 3
1 2 2
[A]n×m Ä… [B]n×m = [C]n×m
[A]n×m " [B]m×k = [C]n×k
= 0

[aij]n×m . " [bij]n×m = [aijbij]n×m
i = 1, 2, . . . , n j = 1, 2, . . . , m
[aij]n×m ./[bij]n×m = [aij/bij]n×m
i = 1, 2, . . . , n j = 1, 2, . . . , m
r
r = 0

ij
ex
 -" +"