This applet is used to calculate the solution set to a linear system of equations. Type in the number of equations (this should be the same as the number of unknowns) and then press "Enter Equations."
A window should pop up with blank text fields where you may enter the coefficients for each variable in the system of equations. The column on the right is for adding the solution values for each of the equations. This table should contain the same values as the coefficient matrix. After you have filled out each of the text fields, press "done."
Finally, a new window will pop up providing that all of the fields had values entered. This window will contain the values of each of the unknowns that the computer solved for.