Question

Determine a matriz A = (aij) 3x3 tal que aij= 4i - j

Answer 1

a11 = 4.i-j = 3
a12 = 4.i-j = 2
a13 = 4.i-j =1
a21 = 4.i-j =7
a22 = 4.i-j =6
a23 = 4.i-j =5
a31 = 4.i-j =11
a32 = 4.i-j =10
a33 = 4.i-j =9
$\left[\begin{array}{ccc}3&2&1\\7&6&5\\11&10&9\end{array}\right]$