Square Matrix/Examples/3 x 3

Example of Square Matrix
The $3 \times 3$ square matrix is as follows:


 * $\mathbf A = \begin{bmatrix}

a_{11} & a_{12} & a_{13} \\ a_{21} & a_{22} & a_{23} \\ a_{31} & a_{32} & a_{33} \\ \end{bmatrix}$