**Function**

There
are several ways to enter a function into the Casio graphing calculator. For basic
use, we recommend simply entering a function into the equation editor and then
working with it from there. To begin, press **MENU
3** to access the graph table screen. This takes you immediately to the equation
editor.

Simply
type in the algebraic expression used to define the function. For example, to
enter the quadratic function *f* defined by *f*(*x*) = *x*
^{2} + 3*x* - 7, type

**X ****^**** X ^{2} + 3 X - 7 EXE**

Once the function is entered, then you can perform a variety of tasks; for example, evaluate the function at a given input value, graph the function, make a table of functional values.