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let A, B are any 4 by 2 Matrices , i want to know whether it is possible to obtain a 4 by 4 matrix by using equation A=B

Thanks in advance

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    $\begingroup$ No, but Join[A,B,2] should work $\endgroup$
    – John McGee
    Nov 20, 2015 at 12:03
  • $\begingroup$ dear i am studying a paper in which a 4 by 4 matrix is formed by using A=B $\endgroup$
    – M.M Umber
    Nov 20, 2015 at 12:08
  • $\begingroup$ Can you post a link to the paper you mention? $\endgroup$
    – shrx
    Nov 20, 2015 at 12:13
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    $\begingroup$ Perhaps the point is that A=B can be solved by row reducing [A|B] (if there is a unique solution) $\endgroup$
    – John McGee
    Nov 20, 2015 at 12:13
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    $\begingroup$ Use John's suggestion, which is better than mine, which would be ArrayFlatten[{{A,B}}] $\endgroup$
    – Jason B.
    Nov 20, 2015 at 12:13

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