## Real Functions: Root Functions

An root function is a function expressed by x

^{1}

^{/n}for positive integer n greater than 1. The graphical representation of power functions is dependent upon whether n is even or odd.

For even values of n (i.e., n = 2, 4, 6, ...), root functions will resemble the form illustrated for square root function expressed by f (x) = x

^{1/2}depicted below: