MATH132

Página 1

Week 9 Algebra - Elementary Matrices

Revision:

When solving linear systems, we learned that there are three basic classes of elementary row operation

- Multiplying a row by a (nonzero) constant

- Swap two rows

- Add a multiple of one row to another

Matrix Inversion:

- We can use Matrix inversion to compute the identity of a matrix A:

AX = I