This program uses the complicated Gauss-Jordan elimination method to find the inverse of any square matrix. You simply choose your matrix's dimensions, and then enter the elements of the matrix you want inverted in the left frame. When you press Enter, the inverse matrix will be shown in the right frame. If your matrix doesn't have an inverse, you will be told so. You can also use the randomize button to fill in your matrix with random elements. This is useful if you don't want to type the elements manually and just want to test the program.
