Texas Instruments TI-89 Titanium Short User Manual

256 Appendix A: Functions and Instructions
Trace CATALOG
Trace
Draws a Smart Graph and places the trace cursor
on the first defined Y= function at the previously
defined cursor position, or at the reset position if
regraphing was necessary.
Allows operation of the cursor and most keys
when editing coordinate values. Several keys,
such as the function keys, O, and 3, are
not activated during trace.
Note: Press ¸ to resume operation.
Try CATALOG
Try
block1
Else
block2
EndTry
Executes block1 unless an error occurs. Program
execution transfers to
block2 if an error occurs in
block1 . Variable errornum contains the error
number to allow the program to perform error
recovery.
block1 and block2 can be either a single statement
or a series of statements separated with the “:”
character.
Program segment:
©
:Try
: NewFold(temp)
: Else
: ¦Already exists
: ClrErr
:EndTry
©
Note: See ClrErr and PassErr.
TwoVar MATH/Statistics menu
TwoVar list1 , list2 [, [ list3 ] [, list4 , list5 ]]
Calculates the TwoVar statistics and updates all
the system statistics variables.
All the lists must have equal dimensions except
for
list5 .
list1 represents xlist.
list2 represents ylist.
list3 represents frequency.
list4 represents category codes.
list5 represents category include list.
Note:
list1 through list4 must be a variable name
or c1–c99 (columns in the last data variable
shown in the Data/Matrix Editor).
list5 does not
have to be a variable name and cannot be c1–c99
.
{0,1,2,3,4,5,6}! L1 ¸
{0 1 2
...}
{0,2,3,4,3,4,6}! L2
¸
{0 2 3
...}
TwoVar L1,L2
¸ Done
ShowStat
¸

Texas Instruments TI-89 Titanium Specifications

General

Display Type	LCD
Display Resolution	160 x 100 pixels
CPU	Motorola 68000
CPU Speed	16 MHz
RAM	256 KB
Flash ROM	2.7 MB
Programming Language	TI-BASIC, Assembly
Power Source	4 AAA batteries
Connectivity	I/O port
Dimensions	7.5 x 3.5 x 1 inches