|Applet 2.4 : Inverse of Matrix|
For a m x m matrix A, consider the augmented matrix P := [ A | Im ], where Im
is the m x m identity matrix. We apply elementary row operations to P so that A is begin to reduce
to Row Echelon Form
. Let this change P to
| B ]. If
= Im , then A is invertible and
. The following applet helps you to check for matrix A.