Slide 2:
A system of equations can be represented using matrices. Can be represented as:
Slide 3:
Normally if we were solving an equation we would divide
BUT… you cannot divide matrices so…
Instead you will multiply both sides of the equation by
the inverse of the coefficient matrix A x = B
Slide 4:
For example:
Solve 6x + 5y = 13
5x + 4y = 10 Rewrite as a matrix Multiply by the inverse
Slide 5:
Solve x – y + z = 2
- 2y + z = 2
-2x – 3y = ½