Operation Manual

Chapter 3: Function Graphing 77
Selecting and Deselecting Functions from the Home Screen or a Program
To select or deselect a function from the home screen or a program, begin on a blank line and follow
these steps.
1. Press  ~ to display the
VARS Y-VARS menu.
2. Select
4:On/Off to display the ON/OFF secondary menu.
3. Select 1:FnOn to turn on one or more functions or 2:FnOff to turn off one or more functions. The
instruction you select is copied to the cursor location.
4. Enter the number (1 through 9, or 0; not the variable
Yn) of each function you want to turn on or
turn off.
• If you enter two or more numbers, separate them with commas.
• To turn on or turn off all functions, do not enter a number after FnOn or FnOff.
FnOn[function#,function#, . . .,function n]
FnOff[function#,function#, . . .,function n]
5. Press Í. When the instruction is executed, the status of each function in the current mode is set
and Done is displayed.
For example, in
Func mode, FnOff :FnOn 1,3 turns off all functions in the Y= editor, and then turns on
Y1 and Y3.
Setting Graph Styles for Functions
MATH Graph Style Icons in the Y= Editor
This table describes the graph styles available for function graphing. Use the styles to visually
differentiate functions to be graphed together. For example, you can set Y1 as a solid line, Y2 as a
dotted line, and Y3 as a thick line.You can also set the line color.
Plot1 is turned on.
Plot2 and Plot3 are turned
off.
Icon Style Description
ç Thin A solid line connects plotted points; this is the default in
Connected mode
è Thick A thick solid line connects plotted points
é Above Shading covers the area above the graph
ê Below Shading covers the area below the graph
ë Path A circular cursor traces the leading edge of the graph and
draws a path