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