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
pressure to dB?
Getting the indices from a vector
Square the input
Calculate area of sector
Matlab Basics - Logical Tests I
Matlab Basics II - squares
Matlab Basics II - Count rows in a matrix
Matlab Basics - Switching Assignments
Matlab Basics - Pick out parts of a vector
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