Chapter 2.2, Problem 1P

Explanation of Solution

Representing the given system of equations in two different ways:

The system of equations to be represented is as follows:

$\begin{array}{c}{x}_1-x_2=4\\ 2x_1+x_2=6\\ x_1+3x_2=8\end{array}$

The method of representing the equation in matrix form is defined as follows:

$Ax=b$

Here,

$A$ is an $m\times n$ matrix.

$x$ is an $n\times l$ matrix.

$b$ is an $m\times l$ matrix.

Matrices $A$ and $b$ are constant matrices and matrix $x$ is a variable matrix