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Ok, so I am trying to find a way to make this matrix shown here, in LaTeX:

enter image description here

I tried to search for this type, but I frankly do not know what one would call this, so I had to draw a picture shown here to illustrate what I mean. So basically, I want a matrix, but I need to make lines as rows as shown here, with the respective $$x_i^T$$ shown as well.

Would appreciate any help, thanks.

Spacey
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    Hello! I had this question a little while ago: http://tex.stackexchange.com/q/57411/10679. Hope this helps! – kan Apr 10 '13 at 20:14
  • @kan Never mind it works! Question - how to change to make it vertical lines? Thanks!! – Spacey Apr 10 '13 at 20:36
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    Oh, I think the code in question shows how there is an easy code for vertical lines using \bigg|. There is no such easy solution for the horizontal lines, which motivated the question. – kan Apr 10 '13 at 20:51
  • @kan Thanks again! I have a second part to this question here. – Spacey Apr 10 '13 at 20:57

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