Texas Instruments TI-83 Manual Book page 82

Defining a
Function from
the Home Screen
or a Program
Evaluating Y=
Functions in
Expressions
3-6 Function Graphing
To define a function from the home screen or a program,
begin on a blank line and follow these steps.
1. Press ƒ [
ƒ [
] again.
ã
2. Press ¿.
3. Press  ~
VARS Y.VARS
4. Select the function name, which pastes the name to the
cursor location on the home screen or program editor.
5. Press Í to complete the instruction.
expression
" "!Y
When the instruction is executed, the TI-83 stores the
expression to the designated variable
function, and displays the message
You can calculate the value of a
specified value of
n value
Y ( )
n value1 value2
Y ({ ,
], enter the expression, and then press
ã
to select
1 1:Function
menu.
n
Y=
. A list of values returns a list.
X
value3 . . . value n
, , ,
from the
n, selects the
Y
.
Done
function n at a
Y
})