J-G, thanks for the problem. Could you add some more information about expected inputs and outputs? An example and some more tests would be helpful too. If your test suite has exactly one test, it's trivial to write a correct answer.
sum of first 'n' terms
Square wave average calculation
04 - Scalar Equations 3
Finding perimeter of a rectangle
A SUBSREF variant that accepts the 'end'-operator.
Insert certain elements into a vector.
Wrap a vector, but insert NaN's at the wrap-positions.
Remove element(s) from cell array
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