MathGroup Archive 2007

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row,column question

If I have a 4x4 matrix and I postmultiply by {{1,0,0,bx}} I actually get 
something like col1 + bx*col4

Is there any way of telling Mathematica to show the result in a symbolic form using 
(for example, rows and columns) in this case.

NB. I've been playing with the AaddOn NCAlgebra, but not managed it with that 



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