Question

determine a matriz A=[aij] 3x3 tal que aij= i-j.

Answer 1

As linhas são os i (1,2,3) e as colunas são os j (1,2,3)
a11: 0
a12: -1
a13: -2
a21: 1
a22: 0
a23: -1
a31: 2
a32: 1
a33: 0


| 0 -1 -2 |
| 1 0 -1 |
| 2 1 0 |