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!
Number of toolboxes?
Replace May with April
Stuff the Board
Generate a vector like 1,2,2,3,3,3,4,4,4,4
02 - Vector Variables 5
Multivariate polynomials - sort monomials
Find all vampire fangs
Multivariate polynomials - emulate symbolic form
Find vampire numbers
Product of two multivariate polynomials
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