A=
[tex]\left[\begin{array}{ccc}a11&a12&a13\\a21&a22&a23\\a31&a32&a33\end{array}\right][/tex]
A= [tex]\left[\begin{array}{ccc}(2.1-1)+1&(2.1-1)+2&(2.1-1)+3\\(2.2-1)+1&(2.2-1)+2&(2.2-1)+3\\(2.3-1)+1&(2.3-1)+2&(2.3-1)+3\end{array}\right][/tex]
A=[tex]\left[\begin{array}{ccc}2&3&4\\4&5&6\\6&7&8\end{array}\right][/tex]
