if you're going to post trivial problems that have already been posted before, at least use a proper test suite.
and this one does not even require a solution
Create a square matrix of multiples
Count up then down
Output any real number that is neither positive nor negative
Matlab Basics - Logical Tests I
Matlab Basics II - Max & Index of Max
Matlab Basics - Rounding III
Matlab Basics - Set unwanted parts of a vector to zero
Matlab Basics - y as a function of x
Matlab Basics II - Determine if an array has a 3rd dimension
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