1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Reduced Row Echelon Matrix

  1. Oct 13, 2009 #1
    What exactly is a reduced row echelon matrix.

    I had to convert this to one:
    1 2 1 1 1 1
    -3 -6 -2 0 -1 -3
    2 4 2 1 3 -3

    And got:
    1 2 1 1 1 1
    0 0 1 3 2 0
    0 0 0 1 -1 5

    Is this right and, if not, why?

    Thanks for the help.
     
  2. jcsd
  3. Oct 13, 2009 #2
    Assuming your arithmetic is correct, that is row echelon form. Reduced row echelon form requires that each column with a leading one have nothing else but zeros in it.
     
  4. Oct 14, 2009 #3

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    You have the signs on the last row wrong. You are subtracting 2 times the first row from the third and should have 1- 2(1)= -1, 3- 2(1)= 1, and -3-2(1)= -5.
     
  5. Oct 14, 2009 #4
    Thanks for the help.

    I got
    1 2 0 0 3 -11
    0 0 1 0 5 -15
    0 0 0 1 -1 5

    I think this is right.

    I did it the other way round HallsofIvy.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Reduced Row Echelon Matrix
  1. Row echelon form (Replies: 3)

  2. Matrice echelons (Replies: 1)

  3. Row-Echelon Form (Replies: 9)

Loading...