Classifique as matrizes a baixo.

a) =
3
2
1

b) = 0 1 2

 c) =
3 6 21
4 7 2
5 7 −9

d) =
0 0
0 0

e) =
2 0 0
0 4 0
0 0 6
0 0 0
0
0
0
8

​