Question about Texas Instruments TI-89 Calculator

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Undefined variable error

M calculus teacher told me that I needed to disable plots. I did a statistics problem involving plots. And I have cleared the plots. However, now, when I enter a function in the y=editor an error appears. It says error, undefined variable. I hit enter. Then home screnn comes up and asks me to define it.

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  • Anonymous Feb 21, 2009

    I am trying to graph x^2 and it is giveing me an error message that states undefined variable.

  • Anonymous Mar 20, 2009

    but the answer you provided still does not work. It displays an error"syntax" and does not plot the graph.

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  • 16 Answers

Goto home and type Define x

Posted on Jul 09, 2008

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1 Answer

How should I set my ti 83 plus for my statistics course? I keep trying to sort L1 in ascending order and every time I get ERR: INVALID DIM 1: QUIT ...


If some of the lists are missing press the STAT button then select SetUpEditor and ENTER to restore all of them (without data, of course.)
If the statistical plots are turned OFF you can turn one of them back ON again. Press SHIFT Y1= to access STAT PLOTS. Press 4:Plots Off. A good habit to avoid problems. After you turn all plots OFF, you must turn one of them ON if you intend to draw statistical graphs. You can for example Turn Plot1 ON.
  1. To do so Press SHIFT Y1=, select say 1:Plot 1 ENTER.
  2. Highlight ON and press ENTER.
  3. Press DownArrow to move to line TYPE
  4. Then you can set the plot type. You have 6 choices. Use the left/Right arrows to select one of the 6. The selected plot type icon will remain highlighted when cursor is moved.
  5. Use DownArrow to move to XLIST line and select the x-values LIST. etc.
  6. When finished Press 2nd QUIT to exit the stat plts configuration settings.
One statistical value that may be of interest to you is the R, R^2 coefficients. To have it displayed (if the regression model has it), you must set DiagnosticsON.

Press SHIFT 0 to enter catalog. Press x^-1 key to jump to the first command that starts with D.
Scroll down to reach DiagnosticsON, highlight it and press ENTER then ENTER.

Sep 16, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

Whenever i try the graph on my TI-83 Plus the ERR:INVALID DIM 1:QUIT comes up and ive checked the STAT PLOT and i have Plot 1 set as ON.


You have to turn all statistical plots OFF before you draw function graphs. Press [2nd][Y=] to open the statistical plot configuration screen. Press [4:PlotsOFF] and then [ENTER]. When calculator answers DONE you are ready to draw function plots.

Sep 09, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

When i type anything into Y= the error message INVALID DIM comes up. What do I do to fix this?


I believe that you get the error message not when you type anything in Y= editor, but after you hit the {GRAPH] button. Anyway this is due to the fact that one of your statistical plots are active.

If you got the message while trying to draw a graph (that is your situation)
  1. Press [2nd][Y=] (STAT PLOT)
  2. Choose option [4:PlotsOff][ENTER]. Screen displays Done
If message popped up while doing something else that involves lists or matrices, the length of lists may be different, or the dimensions of matrices may not be compatible.

To Clear the lists:
  1. Press [2nd][0] (CATALOG)
  2. Press [PGRM] (C) to jump to first command that starts with c.
  3. Use arrow to scroll down to ClrAllLists, select it [ENTER]
  4. Calculator displays Done
  5. Start the new problem.
To reset the Ram press [2nd][ ] (MEM) [7:Reset][1:All Ram][2:Reset]. Press [CLEAR] to erase the Ram Cleared message.

When the RAM is cleared, the calculator is reset. The calculator resets itself after a battery change.

Sep 07, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

When I try to graph, I get ERR:INVALID DIM I tried going to PlotsOff and I still can not graph


What happened when you tried going to PlotsOff. Did you actually execute the command?

If you executed that command and cannot graph then for some reason you are feeding lists or matrices as arguments to the functions you want to draw.
By the way are you drawing STATISTICAL GRAPHS or FUNCTION GRAPHS?

If you are drawing statistical graphs and you executed the PlotsOff command, it is normal you will not be able to graph because PlotsOff turns OFF the statistical graphs.

Here are a few things you can do:

If you got the message while trying to draw a graph
  1. Press [2nd][Y=] (STAT PLOT)
  2. Choose option [4:PlotsOff][ENTER]. Screen displays Done
If message popped up while doing something else that involves lists or matrices, the length of lists may be different, or the dimensions of matrices may not be compatible.

To Clear the lists:
  1. Press [2nd][0] (CATALOG)
  2. Press [PGRM] (C) to jump to first command that starts with c.
  3. Use arrow to scroll down to ClrAllLists, select it [ENTER]
  4. Calculator displays Done
  5. Start the new problem.
To reset the Ram press [2nd][+] (MEM) [7:Reset][1:All Ram][2:Reset]. Press [CLEAR] to erase the Ram Cleared message.

Aug 17, 2010 | Texas Instruments TI-84 Plus Silver...

2 Answers

How do I clear things left in the stat plot window?


To clean the slate so to speak, just reset the RAM.
  1. Press [2nd][+] to access the (MEM)ory management function
  2. Press [7:Reset]
  3. Press [1:All Ram]
  4. Press [2:Reset]
  5. Press [CLEAR] to erase the "RAM cleared" Message

Calc

Aug 02, 2010 | Texas Instruments TI-83 Plus Calculator

2 Answers

Whenever i press the graph button on my ti-83plus i get an error message 'dim' it did not come with in depth directions & i am lost please help!


You're probably trying to graph a function that does not involve stat plot features. You can correct this by turning off the stat plot features. Press "2ND" "STAT PLOT" and then select 4:PlotsOff.

You caon download a guidebook from http://education.ti.com

Jul 21, 2010 | Texas Instruments TI-83 Plus Calculator

2 Answers

When i graph i get : err : invalid dim, what do i do ?


You're probably trying to graph a function that does not involve stat plot features. You can correct this by turning off the stat plot features. Press "2ND" "STAT PLOT" and then select 4:PlotsOff.

Jun 10, 2010 | Texas Instruments TI-84 Plus Calculator

2 Answers

TI-83 Plus Calculator: I am trying to graph an equation and I get the "ER...


If the message appears when you try to graph functions deactivate the statistical plots. To do so:

Press [2nd][Y=] to access (STAT PLOTs)
Select [4:PlotsOff] then [ENTER]

That should solve your problem. Post a comment to this thread if you still have trouble graphing.

If the message appears in another context, it sure would help knowing the context of the error.

May 07, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

Having problem with ti 83 calculator everytime i graph it read error invalid dimensions


You must deactivate the statistical plots. If you do statistical graphs, the graphing is reconfigured in a way that happens to be incompatible with regular fuction graphs.

  1. To deactivate the statistical plots.
  2. Press [2nd][Y=] to access the (STAT PLOT) menu.
  3. Press [4:PlotsOff][ENTER].
  4. Calculator displays Done.
  5. You are ready to draw the function graphs.

Feb 15, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

My TI-84 Plus won't graph two functions at once. Only one equal sign highlights. My math teacher doesn't even know what to do and I really need two functions to show on one graph.


Hello,
Turn the satistical plots OFF
Press [2nd][Y=] (STATPLOT). Select or enter 4: to execute the command [PlotsOff] [ENTER]

Clear the lists (statistical lists)
Press [2nd][0] (Catalog]. Press [PGRM] C. The cursor jumps to the first command in catalog that starts with C (The greek letters in names do not matter). Scroll down a bit to reach the command [ClrAllLists]. Select it and press [ENTER].

Try your graphs again.
If you still have problems, just reset the RAM:
Press [2nd][+] (MEM). Press 7 to select [Reset] then [1:All Ram][2:Reset]. Press [Clear] to erase the Ram Cleard message.

Now you should be able to draw the graphs.

Hope it helps.
Thanks for using FixYa.

Nov 19, 2009 | Texas Instruments TI-84 Plus Calculator

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