Question 1180130
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To work with matrices in  desmos,  go to this web-page

https://www.desmos.com/matrix




To learn on  HOW  TO  work with matrices in  desmos.com,  look into this page

https://learn.desmos.com/matrix


There is nice educational video there,  teaching and instructing you.




Do not ask the tutors press buttons instead of you.


Learn how to do it,  and do it on your own.




Do not forget to post your  "THANKS"  to me for my instructions.