Return x by reshaping it.
+1 for the unintentionally hilarious "non trivial identities" series
Select every other element of a vector
Find the index of n in magic(n)
Area of a Square
Is My Wife Wrong?
Change the first and last diagonal element of the identity matrix to zero
Find the diagonal of the square of side L
Area of polygon
Non trivial identities - summation
Non trivial identities - flipping
Simple polynomial evaluation
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