How do I use Cramer's rule to solve a system of equations?
1 Answer
You divide each variable determinant by the determinant of the coefficients.
EXAMPLE:
Use Cramer's Rule to solve the following system of equations:
Solution:
The left hand side gives us the coefficient matrix.
The right hand side gives us the answer matrix.
The determinant
Let
Similarly,
and
Cramer's Rule says that
The solution is