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Homework Help: Row and column matrix operations

  1. Jun 20, 2011 #1
    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?

    For (b), I got it into the form they want. The rank of the matrix is 2 because I have I2 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]
    Last edited by a moderator: May 5, 2017
  2. jcsd
  3. Jun 20, 2011 #2
    You can do column and row operations when finding the determinant.
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