Check that number is whole number
Matlab Basics II - Count rows in a matrix
Matlab Basics II - Extract last 3 elements of a vector
Divide by 4
Area of a Square
Generate n equally spaced "intervals" between -x and x (★)
Sum of elements in a vector (★)
Stacking vectors into a matrix
Remove the row average (★★★)
Reindex a vector (★★)
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