Defining Functions - Texas Instruments TI-83 Manual Book

Defining Functions

Displaying
Functions in the
Y= Editor
Defining or
Editing a
Function
To display the
Y=
functions to the function variables
You can graph one or more defined functions at once. In
this example, functions
To define or edit a function, follow these steps.
1. Press o to display the
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.
You may use functions and variables (including
matrices and lists) in the expression. When the
expression evaluates to a nonreal number, the value
is not plotted; no error is returned.
The independent variable in the function is
mode defines „ as
or press ƒ [
When you enter the first character, the
highlighted, indicating that the function is selected.
As you enter the expression, it is stored to the variable
as a user-defined function in the
Yn
4. Press Í or † to move the cursor to the next
function.
editor, press o. You can store up to 10
Y
and are defined and selected.
Y Y
1 2
editor.
Y=
. To enter
X
].
X
Function Graphing 3-5
through , and
Y Y
1 9
.
X Func
, press „
X
is
=
editor.
Y=
.
0