Solving a Linear System Solve the system of equations by converting to a matrix equation. Use a graphing calculator to perform the necessary matrix operations, as in Example 7.
The system of equations using a graphing calculator.
The linear system is as follows.
A system of linear equations can be written in the form of where is called the coefficient matrix, is called the known matrix, and is called the variable matrix.
If a square matrix of dimension has an inverse , and if is a variable matrix and is a known matrix both with rows, then the solution of the matrix equation is as follows.
The system of linear equations can be written as a single matrix equation as follows:
Here, , , and .
The solution of this matrix equation is determined as, .
Thus, find the solution using the graphing calculator as below.
In your graphing calculator press the key and right arrow to on the screen
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