From a usability point of view, returning a string to indicate nothing found is probably the worst. an empty value or 0 would be much better.
Guillaume, I would say that that depends upon the intended 'audience' for the output.
Find the largest value in the 3D matrix
factorial of a number x
Calculate area of sector
Matlab Basics II - 3 Dimensional Arrays
Matlab Basics II - Minimum
Matlab Basics - Absolute Value
Matlab Basics II - Operations and Matrix Dimensions
Matlab Basics II - Count rows in a matrix
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