Write a function that has the following property: f(f(x)) = -x for any numeric array x.
Note that there is no restriction on the output for f(x). How bizarre can you make it?
This one really surprised me.
Getting a little silly!
Find the two most distant points
Back to basics 8 - Matrix Diagonals
Back to basics 15 - classes
Calculate the area of a triangle between three points
sum of first 'n' terms
Multivariate polynomials - convert monomial form to array
Outer product of multiple vectors
Find all vampire fangs
Multivariate polynomials - overload multiplication
Multivariate polynomials - emulate symbolic form
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