Write a function that takes one input argument n and outputs a (n x n) square matrix A with the following properties:

 -A has an eigenvalue of 3
 -all elements of A differ more than .5 from each other.
   For example

A=matrix_design(3)

A=

     4    -3     2
    -1     1     3
     0     5    -2
Solve

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Last Solution submitted on Nov 27, 2025

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Augusto Mazzei David Hill Michael Thorburn CXD

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