Question

Representar explicitamente a matriz A = (a ij ) 2x3 tal que a ij = 5i - j

Answer 1

Resposta:

aij=5i-j

a11=5.1-1=5-1=4

a12=5.1-2=3

a13=5.1-3=2

a21=5.2-1=10-1=9

a22=5.2-2=10-2=8

a23=5.2-3=10-3=7

$\left[\begin{array}{ccc}4&3&2\\9&8&7\end{array}\right]$