Applet 2.4 : Inverse of Matrix 
For a m x m matrix A, consider the augmented matrix P := [ A  I_{m }], where I_{m}
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
= I_{m }, then A is invertible and
B =
. The following applet helps you to check for matrix A.


: 