@Cris Luengo, filter2 is not a toolbox function, (I am not aware if it was earlier or not) and should be allowed now.
Strictly incomprehensible for me.
Well done :!
Really nifty!! ;-)
Column norms of a matrix
Convert String to Morse Code
Vectorizing, too easy or too hard?
Multiply 2 numbers
Derivative of polynomial
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