Texas Instruments TI-92 Getting Started page 37

: Disp "Complex roots", m, n
displays the message "Complex roots" and both roots
: Stop
: Lbl Label2
: Disp "Double root", m
displays the message "Double root" and the solution (root)
When you have finished, press 2nd QUIT to leave the program editor and move on.
If you want to remove a program from memory, press 2nd VAR-LINK, use the cursor pad to highlight the name of
the program you want to delete, then press F1[Manage] 1[Delete] ENTER and then ENTER again to confirm the
deletion from the calculator's memory.
Technology Tip: The program uses the variables a, b, c, d, m, and n. Note that any previous values for these
variables, including matrices, will be replaced by the values used by the program. The TI-92 does not distinguish
between A and a in these uses. Note that you will have to clear the variables (using 2nd VAR-LINK) in order to use
these names again in the current folder. From the Home screen, F6 will clear all 1-character variables. Another way
to deal with this is to create a new folder. From the Home screen, press F4[Other] B[NewFold] and type the name
of the new folder. The work you do from that point on will be in the new folder, as indicated by the folder name in
the lower left corner of the Status line. You can change folders from the MODE menu or, from the Home screen, by
typing setFold(foldername), where foldername is the existing folder that you wish to be in.
5.10.2 Executing a Program: To execute the program you have entered, go to the Home screen and type the name
of the program, including the parentheses and then press ENTER to execute it. If you have forgotten its name, press
2nd VAR-LINK to list all the variables that exist. The programs will have PRGM after the name. You can execute
the program from this screen by highlighting the name and then pressing ENTER. The screen will return to the
Home screen and you will have to enter the closing parenthesis ) and press ENTER to execute the program.
The program has been written to prompt you for values of the coefficients a, b, and c in a quadratic equation ax
bx + c = 0. Input a value, then press ENTER to continue the program.
If you need to interrupt a program during execution, press ON.
After the program has run, the TI-92 will display the appropriate message and the root(s). The TI-92 will be on the
Program I/O screen not the Home screen. The F5 key toggles between the Home screen and the Program I/O screen
or you can use 2nd QUIT,
The instruction manual for your TI-92 gives detailed information about programming. Refer to it to learn more
about programming and how to use other features of your calculator.
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Graphing Technology Guide: TI-92
HOME to go to the Home screen, or the APPS menu to go any screen.
Copyright © Houghton Mifflin Company. All rights reserved.
D I S P 2nd " C O M P L E X
M , N ENTER
S T O P ENTER
L B L L A B E L 2 ENTER
D I S P 2nd " D O U B L E
ENTER
R O O T S 2nd " ,
R O O T 2nd ", M
2
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