| Solved by pluggable solver: Using Cramer's Rule to Solve Systems with 2 variables |
First let Take note that the right hand values of the system are These values are important as they will be used to replace the columns of the matrix A. Now let's calculate the the determinant of the matrix A to get Notation note: Since the determinant of matrix A is zero, this means that we cannot use Cramer's Rule. Why? Remember that each solution 'x' and 'y' are found by dividing by the determinant of A. If that determinant is zero, then you'll be dividing by zero, which is undefined. So that means you have to use an alternate method to find the solution. |