Unit: Radical Functions and Equations Objective: Graph Square Root Functions Graphing Square Root Functions A function, () = f x u where u is an expression in x, is called a square root . Learn how to graph the square root function f(x) = √x, its inverse, and its transformations. See the domain and range of the function and how to project them onto the axes. Download free printable charts of square roots of perfect squares from 1 to Use them as a reference or a tool to simplify expressions invol