Texas Instruments TI-83 Manual Book page 367

Function or Instruction/
Arguments
GraphStyle( function#
graphstyle# )
GridOff
GridOn
G-T
Horiz
Horizontal y
identity( dimension
condition
:If
: commandA
: commands
:If condition
:Then
: commands
:End
: commands
:If condition
:Then
: commands
:Else
: commands
:End
: commands
imag( value )
Result
, Sets a graphstyle for
function#.
Turns off grid format.
Turns on grid format.
Sets graph-table vertical
split-screen mode.
Sets horizontal
split-screen mode.
Draws a horizontal line at y.
) Returns the identity matrix of
dimension rows × dimension
columns.
If condition = 0 (false), skips
commandA.
Executes commands from
to
Then
(true).
Executes commands from
Then to
(true); from
condition = 0 (false).
Returns the imaginary
(nonreal) part of a complex
number or list of complex
numbers.
Tables and Reference Information A-11
if condition = 1
End
Else if condition = 1
to if
Else End
Key or Keys/
Menu or Screen/Item
† 
CTL
H:GraphStyle(
16-15
† y [
]
FORMAT
3-14
GridOff
† y [
]
FORMAT
3-14
GridOn
† z
1-12
G-T
† z
1-12
Horiz
y [
]
DRAW
DRAW
3:Horizontal
Ž
MATH
10-13
5:identity(
† 
CTL
16-9
1:If
† 
CTL
2:Then
16-9
† 
CTL
3:Else
16-10

CPX
3:imag(
2-18
8-6