16.4 Matrices and Linear Equations
Multiply Matrix of Constants by Inverse of Matrix of Coefficients • Solving Systems of Equations • Matrix Solution on a Calculator
As we stated at the beginning of Section 16.1, matrices can be used to solve systems of equations. In this section, we show one method by which this is done. As we develop this method, it will be apparent that there is a great deal of numerical work involved. However, methods such as this one are easily programmed for use on a computer, which can do the arithmetic work very rapidly. Also, most calculators can perform these operations, and we will show an example at the end of the section in which a calculator is used to solve a system of four equations more readily than with ...
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