TI-83 Plus Function Graphing 111
Defining Functions
Displaying Functions in the Y= Editor
To display the Y= editor, press o. You can store up to 10 functions to
the function variables Y1 through Y9, and Y0. You can graph one or more
defined functions at once. In this example, functions Y1 and Y2 are
defined and selected.
Defining or Editing a Function
To define or edit a function, follow these steps.
1. Press o to display the Y= editor.
2. Press † to move the cursor to the function you want to define or edit.
To erase a function, press ‘.
3. Enter or edit the expression to define the function.