Are you allowed to mix and match row and column operations? For (a), using only row operations, I cannot get the matrix into the form they want. Could I swap a few of the columns around to do so?(adsbygoogle = window.adsbygoogle || []).push({});

For (b), I got it into the form they want. The rank of the matrix is 2 because I have I_{2}there.

http://i111.photobucket.com/albums/n149/camarolt4z28/IMG_20110620_195851.jpg [Broken]

http://i111.photobucket.com/albums/n149/camarolt4z28/IMG_20110620_210944.jpg [Broken]

http://i111.photobucket.com/albums/n149/camarolt4z28/IMG_20110620_195802.jpg [Broken]

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# Row and column matrix operations

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