Question about Texas Instruments TI-83 Plus Calculator

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JAVAC IS NOT RECOGNIGED AS AN EXTERNAL OR INTERNAL COMMAND OPERABLE PROGRAM OR BATCH FILE''

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Your PC - not the calculator - printed this message. It means that the PC tried to execute the Java compiler, but couldn't find the program. Either the Java compiler is not installed, or the PATH environment variable is not set correctly.
To install the Java compiler follow the instructions for installing J2SE at java.sun.com To fix the PATH environment variable: right-click on My Computer, select Properties, select Advanced System settings, select environment variables, edit or create a new variable called PATH in the system or user settings with the path of the javac.exe program. This is often found in c:Program FilesJavain (it's in a java...bin directory somewhere)

Posted on Jul 24, 2009

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Posted on Jan 02, 2017

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How do i find the program catalog?


If you have stored or written any programs on the calculator you will find the list of programs by pressing the MENU key followed by 9:PRGM.
If on the other hand you are looking for the catalog of programming commands, put the calculator in the RUN MAT screen and press [SHIFT][4] (Catalog]. Press F6 to activate the category and Press [5]: Program Command

Jul 31, 2014 | Casio FX-9750GII Graphing Calculator

2 Answers

Where is the less than sign on my calculator


The relational operators (=, >, <, and similar symbols) are available in two places.
If you are trying to draw an inequality graph
Press the Graph Menu,
Press F3:Type
Press F6:> to access other tabs. The 4 inequality symbols are availabe in the following screen.
Press F1:>, F2:< etc. to type in the inequality sign in your inequality.

If you want the relational operators for some other purpose, you can access then in the catalog of commands.
Press Menu
Press 1:Run>Mat to go to the main calculator screen
Press [SHIFT][4] (Catalog] to open the Catalog.
Scroll up or down until you reach the relational operator you want.
Select it and press EXE.

Jul 04, 2012 | Casio FX9750GII Graphic Calculator

2 Answers

Where is the less than sign?


The relational operators (=, >, <, and similar symbols) are available in two places.
If you are trying to draw an inequality graph
Press the Graph Menu,
Press F3:Type
Press F6:> to access other tabs. The 4 inequality symbols are availabe in the following screen.
Press F1:>, F2:< etc. to type in the inequality sign in your inequality.

If you want the relational operators for some other purpose, you can access then in the catalog of commands.
Press Menu
Press 1:Run>Mat to go to the main calculator screen
Press [SHIFT][4] (Catalog] to open the Catalog.
Scroll up or down until you reach the relational operator you want.
Select it and press EXE.

Jul 04, 2012 | Casio FX9750GII Graphic Calculator

1 Answer

HP 49G+ trying to dowloading a surveying program from hpcalc.org. Unfortunately Xmodem Transfer cannot locate my calculator. I have ran through the troubleshooting hints, to no avail. Thanks, Brian


Why not use the SD card slot on the calculator? Use an SD card formatted in FAT 26 or FAT 32 of not too large capacity, say up to 2 GB. Using a computer, transfer the program on the card and store it at the root of the card: DO not store it inside a folder.
Once the program is on the card, remove the card from the computer and insert it in the SD card slot of the calculator. Turn calculator on and use the file explorer of the calculator.
Press Green Left Shift followed by the APPS key to enact the Files explorer. Navigate to the root of the SD card, copy your program and drop it in one of the three internal memories. IRAM, ERAM or FLASH

Jul 27, 2011 | HP 49g+ Calculator

2 Answers

I need to write a program for interpolation and i dont know how


Do not get me wrong! I have no such program to give you, but a few recommendations.
Read the theory on interpolation and understand it well. Choose one interpolation algorithm-look for something that is not too complicated.
Write a program in your native language (preferably English, because the commands of the TI89Titanium are in English):
  1. Starting from the initial data, state the sequence of steps you would have to perform to get the end result. That is the algorithm.
  2. Translate the steps in abbreviated English (pseudo code).
  3. Better write a step for each action (instruction)
  4. Run it in your head. Use some simple data that you could find in books, references.
  5. If you see that the program should do, translate each statement in the language of the TI89 Titanium.
  6. Respect the syntax of the commands
  7. All the available commands are detailed in the appendix to the book. There, you find each single command with its syntax, parameters, variables, and error conditions).
You can try education.ti.com or ticalc.org for any program you might look at to get some inspiration.

Feb 02, 2010 | Texas Instruments TI-89 Calculator

1 Answer

I am trying to graph to evaluate each expression. how could i do it on the calculator(ti-83) a:(f+g)(0) b)(f-g)(-1) c)(fg)(1) (d)(f/g)(3()


Let us see if I understand what you want to do. You have two functions f and g. With f and g you create four functions,
  1. f+g, which you want to evaluate at 0
  2. f-g, which you want to evaluate at -1
  3. f*g, which you want to evaluate at 1
  4. and f/g, which you want to evaluate at 3
If that is not what you intend to do, then I am sorry to I that interpreted incorrectly and you will have to post a comment with more information.
If however I did understand what you want to do, then there is a simple way to achieve this
  1. In the [Y=] function editor, enter Y1 and Y2
  2. In your mind decide which one represents f(x) and which represents g(x), probably f(x)=Y1(x) and g(x)= Y2(x)
  3. Validate each one by pressing [ENTER]
  4. Do not worry about graphing the function.
  5. Press [2nd][QUIT] to return to main calculator screen
  6. Enter a value (for example 5) and store it in variable X; to do so you press 5 [STO->][X,T, theta,n] [ENTER]
  7. To calculate f(x)+g(x) or (f+g)(x) on the command line in main calculator screen
  • Press [VARS][=>][Y-VARS][1:Function][1:Y1][ENTER]. Main calculator screen echoes Y1
  • Press [+]. Screen shows Y1+
  • Press [VARS][=>][Y-VARS][1:Function][1:Y2][ENTER]. Main calculator screen echoes Y1+Y2
  • Press [ENTER] to obtain the value of f+g at X=5
As you can see, if you want a different operation f-g, f*g, or f`/g for a different value of X, you will have to repeat steps 6 and 7.

I am going to show you how to create a small program that will perform all the 4 operations in sequence, each time asking you for the value of X you want to use. If you are not interested, you can ignore what follows. I remain convinced that it will be helpful for other visitors.

Creating a simple program

Press [PRGM]
Use arrow to highlight [NEW]
Press [ENTER]
Screen displays
PROGRAM
Name= with alpha cursor blinking
Type in the name, for example FOPG ( meaning F operation G) or anything else. Do not use a keyword (reserved command of the TI84Plus) These are what you find in the [CATALOG].

ddae385.jpgac147eb.jpg

The top line on each screen capture is inserted by the program editor after you choose the name. The last line of first screen is the the same line as the second line on 2nd screen. It must not be entered. The colon : is supplied by the program editor. It is the beginning of an instruction.

There are only to commands that are repeated here: Disp and Prompt

Disp orders the program to display
  1. a message (what is between the quotation marks) or
  2. the result of a calculation: Y1+Y2, Y1-Y2, Y1*Y2, or Y1/Y2
Prompt X will display X=? and the blinking cursor. You are supposed to enter the desired value of X and press [ENTER].
The Disp and Prompt command are accessed through the command catalog by pressing [2nd][0] (CATALOG) then scrolling along the list of commands to find the one needed. Shortcuts are possible (see below)

How to key in the program steps within the program editor
: Disp "F+G"

Press [2nd][0] (CATALOG) [X^-1](D) [Scroll Down [till...] Disp
Press [ENTER]. Editor shows :Disp
Press [ALPHA] [+] ("). Editor shows :Disp "
Press [ALPHA][COS] (F). Editor shows :Disp "F
Press [+]. Editor shows :Disp "F+
Press [ALPHA][TAN] (G). Editor shows :Disp "F+G
Press [ALPHA][+] (") Editor shows :Disp "F+G"
Press [ENTER] to validate instruction
Calculator inserts a new line :

: Disp Y1+Y2
Press [2nd][0] (CATALOG) [X^-1](D) [Scroll Down [till...] Disp
Press [ENTER]. Editor shows :Disp
Press [VARS][=>][Y-VARS][1:Function][1:Y1][ENTER]. Editor shows :Disp Y1
Press [+] . Editor shows :Disp Y1+
Press [VARS][=>][Y-VARS][1:Function][1:Y2][ENTER]. Editor shows :Disp Y1+Y2
Press {ENTER] to validate instruction
Editor inserts a new line :


:Prompt X
Press [2nd][0] (CATALOG) [8](P) [Scroll Down [till...] Prompt
Press [ENTER]. Editor shows :Prompt
Press [X,T.theta,n] key. Editor shows :Prompt X
Press [ENTER] to validate instruction
Editor inserts a new line :

To save program
Once all instructions are entered, press [2nd][QUIT] to save program.

To run program


  1. Press [PRGM]
  2. Under the [EXEC] menu, the list of available programs appears.
  3. Type the number corresponding to the one you want to run ( FOPG) and press [ENTER].
  4. The main calculator screen displays prgmFOPG and blinking cursor.
  5. Press [ENTER] to make it run
  6. Enter a value of X and press [ENTER]
  7. Follow instructions.

Dec 21, 2009 | Texas Instruments TI-84 Plus Calculator

2 Answers

Graph won't go away


Hello,
There is an instruction to clear graph
When in Graph mode Press [F6:Draw] and [1:ClrDraw].
Hope it helps.

Feb 09, 2009 | Texas Instruments TI-89 Calculator

1 Answer

TI 84 Change brightness command


Couldnt you just do 2nd up or down multiple times

Oct 24, 2008 | Texas Instruments TI-84 Plus Calculator

1 Answer

Corrupt memory flash (port2 in hp49g+)


Hello,
Turn Calculator ON Press [LeftShift][FILES]. The folder structure appears. Scroll to highlight 2:Flash . Press F3 (Format) and click OK. When finished Press F5 (cancel) and you get out of the file structure.
Hope it helps.

Oct 25, 2007 | HP 49g+ Calculator

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