Return x by reshaping it.
+1 for the unintentionally hilarious "non trivial identities" series
Find the sum of all the numbers of the input vector
Number of digits in an integer
Sum the numbers on the main diagonal
find the surface area of a cube
Sum of the Multiplication of Vectors
Remove collinear points in a set of 2D points defining a polygon
Probabilities - Balls and urns - 02
Geometrical meaning of determinant
Area of polygon
Probabilities - Balls and urns - 01
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