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
Make a checkerboard matrix
Most nonzero elements in row
01 - Scalar variables
Create an anti-identity matrix
Matlab Basics II - Log and natural log
Matlab Basics - Switching Assignments
Matlab Basics - Rounding III
Matlab Basics - Absolute Value
Matlab Basics II - Free Fall
Matlab Basics - Convert a row vector to a column vector
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