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
Remove all the words that end with "ain"
surface of a spherical planet
Back to basics 5 - Clipboard
Sum the elements in either diagonal of a square matrix
Matlab Basics II - Log and natural log
Matlab Basics II - Find the roots of a function
Matlab Basics - Absolute Value
Matlab Basics II - Extract last 3 elements of a vector
Finding an element in a vector
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