# Thread: Prove that an nxn matrix can be obtained two ways.

1. ## Prove that an nxn matrix can be obtained two ways.

Prove that en elementary nxn matrix can be obtained in at least two ways-either by performing an elementary row operation on I $_n$ or by performing an elementary column operation on I $_n$.

2. Originally Posted by alice8675309
Prove that en elementary nxn matrix can be obtained in at least two ways-either by performing an elementary row operation on I $_n$ or by performing an elementary column operation on I $_n$.

Simple: show it one way and then pass to trasnposes...

Tonio