Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Matrix Multiplication

  1. Dec 8, 2004 #1
    Is there an easy way to do 3 X 3 Matrix Multiplication?
     
  2. jcsd
  3. Dec 8, 2004 #2

    mathman

    User Avatar
    Science Advisor

    The ordinary way seems easy enough. What is your problem?
     
  4. Dec 8, 2004 #3
    4 3 2 x 2 4 7
    2 3 4 x 3 4 8
    5 2 5 x 4 3 9

    To find row 1 column one:

    (4x2) + (3x3) + (2x4)

    To find row 3 column 3:

    (5x7) + (2x8) + (5x9)

    I think those examples are correct. If you can't figure out how to do it from there just post again.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook