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Questions on the manipulation of List objects in Mathematica, and the functions used for these manipulations.
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votes
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answers
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Put edges of a matrix to zero
I have to set the first and last rows and columns to zero rows and columns.
I tried with the first column:
For[a = 1, a <= 3, a++, M = ReplacePart[mat, {a, 1} -> 0]; Print[M]]
{{0,1,1},{1,1,1}, …