Question

determine a matriz de a = (aij)3x3 tal que aij = 3i-j
j

Answer 1

$\left[\begin{array}{ccc}a11&a12&a13\\a21&a22&a23\\a31&a32&a33\end{array}\right]$

a11=3.1-1=2
a12=3.1-2=1
a13=3.1-3=0
a21=3.2-1=5
a22=3.2-2=4
a23=3.2-3=3
a31=3.3-1=8
a32=3.3-2=7
a33=3.3-3=6

$\left[\begin{array}{ccc}2&1&0\\5&4&3\\8&7&6\end{array}\right]$