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Question: Return coresponding row and column numbers in a matrix

Question:Return coresponding row and column numbers in a matrix

maple2015 140 Maple
matrix
August 19 2018
0

Hi

I write a code to read the matrix elements and return information about row and column number of some specific data. This code is lengthy.

Is there a command to give this information directly, without necessity of developing a code?

For instance, assume M=`<|>`(`<,>`(1, 3, 2), `<,>`(4, 1, 3))

I need a command to show that each element how many times is repeated and where is located. For example, the number 3  is repeated 2 times in locations [2,1] and [3,2].
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