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Question: How to duplicate rows/columns in a matrix?

Question:How to duplicate rows/columns in a matrix?

DJJerome1976 540 Maple
matrix row
October 14 2020
0

I have an n x n matrix. I am trying to write a procedure that will randomly choose a row (column) in the matrix, and replace another row (column) with the entries of the chosen row (column). So, the end result will be another n x n matrix that has two identical rows (columns). How could one do this?
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