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!
Remove the polynomials that have positive real elements of their roots.
Renaming a field in a structure array
Celsius to Kelvin
Dimensions of a rectangle
Multivariate polynomials - sort monomials
Multivariate polynomials - convert monomial form to array
Multivariate polynomials - emulate symbolic form
Find vampire numbers
Multivariate polynomials - overload multiplication
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