Square Matrix/Examples

Examples of Square Matrices

Real $2 \times 2$ Square Matrix

A $2 \times 2$ real square matrix is an array of $4$ real numbers $p, q, r, s$ arranged as:

$\quad \mathbf A = \begin {bmatrix} p & q \\ r & s \end {bmatrix}$

$3 \times 3$ Square Matrix

The $3 \times 3$ square matrix is as follows:

$\quad \mathbf A = \begin {bmatrix} a_{11} & a_{12} & a_{13} \\ a_{21} & a_{22} & a_{23} \\ a_{31} & a_{32} & a_{33} \\ \end {bmatrix}$