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

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- Mar 2nd 2013, 04:10 PMak786Is 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 - Mar 2nd 2013, 09:32 PMchiroRe: 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. - Mar 2nd 2013, 11:56 PMak786Re: Is this a way to represent column vectors.......
thanks for the reply, but do u mean that '.' represents augmenting two matrices column-wise??

- Mar 3rd 2013, 12:02 AMchiroRe: Is this a way to represent column vectors.......
I think the dot just refers to a matrix of some sort.