Question

b=(bij) 2x3 tal que bij = 3i - 2j

Answer 1

matriz 2 x 3

[ b11 b12 b13 ]
[ b21 b22 b23 ] 

tal que : bij = 3i - 2j

b11 = 3.1-2.1 = 3 - 2 = 1
b12 = 3.1-2.2 = 3 - 4 = -1
b13 = 3.1-2.3 = 3 - 6 = -3
b21 = 3.2-2.1 = 6 - 2 = 4
b22 = 3.2-2.2 = 6 - 4 = 2
b23 = 3.2-2.3 = 6 - 6 = 0

matriz : 

[ 1 -1 -3 ]
[  4  2 0 ]