Results 1 to 4 of 4

Math Help - Is this a way to represent column vectors.......

  1. #1
    Newbie
    Joined
    Mar 2013
    From
    United States
    Posts
    2

    Is this a way to represent column vectors.......

    Hi,
    I came across a representation of matrix i donot clearly understand. Is D[. , t] reprentation of a row of column vector? If not, then can anybody tell me what the dot (.) represents.

    Thanks
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Sep 2012
    From
    Australia
    Posts
    3,664
    Thanks
    606

    Re: Is this a way to represent column vectors.......

    Hey ak786.

    This operation takes two matrices and augments them column-wise. To use an example from Octave:

    >> >> A = [0,1,2;3,4,5;6,7,8]
    A =

    0 1 2
    3 4 5
    6 7 8

    >> X = [1;2;3]
    X =

    1
    2
    3

    >> B = [A, X]
    B =

    0 1 2 1
    3 4 5 2
    6 7 8 3

    Note the requirement with the number of rows for each matrix.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Mar 2013
    From
    United States
    Posts
    2

    Re: Is this a way to represent column vectors.......

    thanks for the reply, but do u mean that '.' represents augmenting two matrices column-wise??
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor
    Joined
    Sep 2012
    From
    Australia
    Posts
    3,664
    Thanks
    606

    Re: Is this a way to represent column vectors.......

    I think the dot just refers to a matrix of some sort.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Vectors in Column Spaces
    Posted in the Advanced Algebra Forum
    Replies: 4
    Last Post: February 25th 2013, 04:54 PM
  2. Replies: 4
    Last Post: February 2nd 2011, 04:16 PM
  3. Replies: 4
    Last Post: May 10th 2009, 06:03 PM
  4. vectors and column spaces
    Posted in the Advanced Algebra Forum
    Replies: 0
    Last Post: May 4th 2008, 03:27 PM
  5. Column Vectors:Why?
    Posted in the Advanced Algebra Forum
    Replies: 2
    Last Post: December 1st 2007, 12:42 PM

Search Tags


/mathhelpforum @mathhelpforum