${\text{If A is 3X3 matrix whose (i,j)}}^{\text{th}}\text{ element is given by}$  $a_{ij}=\left\{\begin{array}{l}2,\text{ i = j }\\ \mathrm{-1, |}i-j\mathrm{|=1}\\ \text{ 0, elsewhere}\end{array}\right.$

$\text{A = }\left[\begin{array}{l}\text{2 -1 0}\\ \text{-1 2 -1}\\ \text{0 -1 2}\end{array}\right]$

$\text{A = }\left[\begin{array}{l}\text{2 -1 -1}\\ \text{2 -1 0}\\ \text{0 -1 2}\end{array}\right]$

$\text{A = }\left[\begin{array}{l}\text{0 -1 -1}\\ \text{-1 2 -1}\\ \text{-2 -1 2}\end{array}\right]$

$\text{A = }\left[\begin{array}{l}\text{-1 2 0}\\ \text{-1 2 2}\\ \text{0 -1 2}\end{array}\right]$