How to draw lines over a matrix to represent Sarrus’s rule

Asked Sep 01 '19 at 18:26

Active Sep 01 '19 at 19:24

Viewed 113 times

I am trying to make this matrix with the lines over it, as the image:

enter image description here

I know the matrix environment but I don’t know how to do this. Thanks.

edited Sep 01 '19 at 19:24

Sebastiano

asked Sep 01 '19 at 18:26

TeemoJg

2

What you try so far? see if http://tex.stackexchange.com/questions/257043/ can help you. – Zarko Sep 01 '19 at 18:44
2

I suggest also https://tex.stackexchange.com/questions/333893/sarrus-rule-with-latex and https://tex.stackexchange.com/questions/476347/determinant-with-tikz-latex for example. – Sebastiano Sep 01 '19 at 19:29

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