solving is magic function

How to write a function that will take a matrix m as an input and return true only if M is a magic square

Answer 1

[Azzi Abdelmalek]

Create a magic matrix with magic function then use isequal to compare your two matrices

[Walter Roberson]

Note: as magic() generates randomly, you will need to generate all of the magic squares of that size and compare each of them to the original matrix.

[Azzi Abdelmalek]

Ok, I ignore it

Answer 2

[Walter Roberson]

One test: calculate the mean of the numbers in the array. If it is not an integer, the array cannot be a magic square.

Another test: an array which is square and has all elements identical is a magic square.

A third test: magic squares are always two dimensional, not vectors and not three or more dimensions.

[Azzi Abdelmalek]

sum(A,1) ans sum(A,2) are equal and constant