# Matrix

Written by Jerry Ratzlaff on . Posted in Algebra

A rectangular or square array of numbers using either brackets or parentheses.

$$\begin{bmatrix} 2 & 4 & 6 & 8 \\ -9 & 18 & 12 & 16 \\ 8.9 & 5 & 7.21 & 11 \end{bmatrix}$$

$$\begin{pmatrix} 2 & 4 & 6 & 8 \\ -9 & 18 & 12 & 16 \\ 8.9 & 5 & 7.21 & 11 \end{pmatrix}$$