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.
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Originally Posted by temaire 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. What is ?
Originally Posted by Defunkt What is ? That would be the identity matrix right?
Originally Posted by temaire That would be the identity matrix right? This is what you need to show. What do you get when you expand ?
Ok I think I got it. If I expand it, I will get the identity matrix. Thanks for the help.
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