Show that the square matrix is its own inverse if

I really don't know where to start here. All I know is that I have to show that .

Any help is appreciated.

Printable View

- February 28th 2010, 01:59 PMtemaireInvertible matrices problem
Show that the square matrix is its own inverse if

I really don't know where to start here. All I know is that I have to show that .

Any help is appreciated. - February 28th 2010, 02:15 PMDefunkt
- February 28th 2010, 02:31 PMtemaire
- February 28th 2010, 03:29 PMDefunkt
- February 28th 2010, 03:32 PMtemaire
Ok I think I got it.

If I expand it, I will get the identity matrix.

Thanks for the help.