Texas Instruments TI-83 PLUS - Manual (Page 119)

TI-83 Plus Function Graphing 116
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 Y n ) 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 Y 1
and Y 3
.