Library Word of the Week - Math Edition

I've been surrounded by Math MCAS retakes for two days, so all I can think about is math. Check out this great list of math terms:

Math Words

Inverse Function The function obtained by switching the x- and y-variables in a function. The inverse of function f is written f -1. Note: The new relation obtained by reversing the x- and y-values of a function is not necessarily a function itself. The new relation is only a function if the original function is one-to-one.