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!
Factorize THIS, buddy
Back to basics 9 - Indexed References
Sum the entries of each column of a matrix which satisfy a logical condition.
Do you like your boss?
Is this triangle right-angled?
Fangs of a vampire number
Multivariate polynomials - emulate symbolic form
Multivariate polynomials - convert monomial form to array
Find vampire numbers
Multivariate polynomials - overload multiplication
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Contact your local office