Question

determine matriz A=[aij]3×3,tal que aij=i-3j+2.

Answer 1

Bom dia!
Vamos lá: 
a11=1+3*1+2=6
a12=1+3*2+2=9
a13=1+3*3+2=12

a21=2+3*1+2=7
a22=2+3*2+2=10
a23=2+3*3+2=13

a31=3+3*1+2=8
a32=3+3*2+2=11
a33=3+3*3+2=14

$A= \left[\begin{array}{ccc}6&9&12\\7&10&13\\8&11&14\end{array}\right]$