Texas Instruments TI-82 User Manual - Page 65

Defining a Graph To define a graph, you set the modes, enter and select the functions to graph, and define the viewing WINDOW and WINDOW FORMAT. Once you have defined a graph, you can plot, display, and explore it. Steps in Defining a Graph There are six basic steps to defining a graph. You may not need to do all the steps each time you define a graph. The procedures are described in detail on the following pages. 1. Set the MODE to Func graphing. 2. Enter or edit a function in the Y= list. 3. Select the Y= function you want to graph. 4. Define the viewing WINDOW variables. 5. Set the WINDOW FORMAT. 6. Deselect stat plots, if appropriate (Chapter 12.) Exploring a Graph Once you have defined a graph, you can display it and then use several tools of the TI.82 to explore the behavior of the function or functions. These tools are described later in this chapter. Saving a Graph You can store the elements that define the current graph in one of six graph databases (Chapter 8). Later, you can recall that database to recreate the current graph. You can store a picture of the current graph display in one of six graph pictures (Chapter 8). Later, you can superimpose that picture on the current graph. Function Graphing 3-3