Operation Manual

Chapter 3: Function Graphing 74
Setting the Graph Modes
Checking and Changing the Graphing Mode
To display the mode screen, press z. The default settings are highlighted below. To graph functions,
you must select
Func mode before you enter values for the window variables and before you enter the
functions.
The TI-84 Plus C has four graphing modes.
• Func (function graphing)
•
Par (parametric graphing; Chapter 4)
• Pol (polar graphing; Chapter 5)
• Seq (sequence graphing; Chapter 6)
Other mode settings affect graphing results or view. Chapter 1 describes each mode setting.
• FLOAT or 0123456789 (fixed) decimal mode affects displayed graph coordinates.
• RADIAN or DEGREE angle mode affects interpretation of some functions.
• THICK, DOT-THICK, THIN, or DOT-THIN graphing mode resets all Y= line styles.
• SEQUENTIAL or SIMUL graphing-order mode affects function plotting when more than one
function is selected.
• FULL, HORIZONTAL, and GRAPH-TABLE modes affect how the graph is displayed; as a full screen, a
split horizontal screen, or a split graph-table screen.
Setting Modes from a Program
To set the graphing mode and other modes from a program, begin on a blank line in the program
editor and follow these steps.
1. Press z to display the mode settings.
2. Press †, ~, |, and } to place the cursor on the mode that you want to select.
3. Press Í to paste the mode name to the cursor location.
The mode is changed when the program is executed.
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.