Question about Texas Instruments TI-84 Plus Calculator

Hi, Trying to find the intercept on a graph. I put the equations in, the graph draws fine, but then when I hit Guess? I get the memory error. I have 24153 RAM free and 131002 ARC free....so I'm guessing its not actually a shortage of memory which is the issue....but maybe corrupted RAM? Doing the same operation on my sister's (identical) Ti-84 works fine. I upgraded to OS2.55 just in case that was the issue, but it made no difference.

If you get **Memory** **Error **its meaninig that memory is insufficient to perform the instruction or function. You must delete items from memory

before executing the instruction or function.

Recursive problems return this error; for example,

graphing the equation Y1=Y1.

Branching out of an If/Then, For(, While, or Repeat

loop with a Goto also can return this error because

the End statement that terminates the loop is never

reached.

Posted on Jan 14, 2013

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Posted on Jan 02, 2017

SOURCE: I can't graph on my ti-84 plus silv. edition

More than likely, you've put in a number in the xmin or xmax that is not correct. Example....you put in an xmin of 10 and an xmax of -10 which would be backwards. This could also happen in the ymin or y max.

The easiest way to fix this is to press zoom 6 which wil get you back to the default graph of xmin of -10, xmax of 10 and ymin of -10 and y max of 10.

If you can't see your graph on this screen and need to change the window, just be sure the number in the min for both x & y is smaller than the number in the max. You change your window size by pressing the window button.

Posted on Aug 15, 2009

SOURCE: err:syntax when I try to graph with ''-''

Hello,

The calculator has two minus signs

- The regular MINUS sign which is used with the subtraction operation. This operation is binary, requiring two operands (two terms). In a-b, a and be are the operands (they very specific names, but I will skip this detail).
- The negation or change sign. This operation is called unary, requiring one operand. -a means take the negative of the number a.

Examples. Let (-) be the negation and -- the regular minus.

- If you enter (-) 12 the TI84Plus accepts it and calculates the negative of 12.
- If you enter 12 (-) 13 the TI protests with a syntax error
- If you enter 12 ( (-) 13) the calculator interprets it as 12* (-13) and calculates -156.
- If you enter --12, the calculator displays Ans--12, where Ans is the last result calculated. If Ans happens to be 0, the new result is obviously the one you are expecting. But if Ans holds a non zero value, this is incorrect.

You can enter it exactly as it is written above. In this case, you must use the change sign (-) in both factors.

You can also decide to use the power rules and enter the expression as X^( -2 --1/3). In this case the first minus is the negation and the second is the regular minus.

I could go on with a few more examples, but that will take us away from your present concern.

In short.

- If the minus sign is the leftmost (first) symbol in your function (after the Y1=) you should use the negation. Any subsequent minus should be the regular minus --
- If the minus sign is the first symbol in an exponent, you must use the negation. Any subsequent minus in the expression of an exponent should be the regular minus --

Do not forget to rate the solution

Posted on Dec 13, 2009

Depending on the function you are drawing, it is possible that the graph is out of range of the windows dimensions. Try Zooming out to see a bigger portion of the plane. If you know where the function intercepts one of the axes, you might want to center the graph around that point.

Jan 16, 2012 | Texas Instruments TI-84 Plus Calculator

You can't simply enter 7x+9=30 into the calculator, there is a way to calculate what the x is but its been a few years since I've done these..

Oct 03, 2008 | Texas Instruments TI-83 Plus Calculator

Try erasing all the lists or resetting the RAM to defaults.

Press [2nd][+] to enter memory management.

Press the number to the left of option ClearAllLists.

Press ENTER to execute the command.

Press [2nd][+] to enter memory management.

Press the number to the left of option ClearAllLists.

Press ENTER to execute the command.

Sep 20, 2011 | Texas Instruments TI-84 Plus Calculator

After you enter the data draw the SCATTER plot first.

When you perform the (linear) regression analysis LineReg, save the regression equation to a function, for example Y1

The syntax is

LineReg L1, L2, Y1 ENTER

From the Stat>CALC menu press LineReg

The command echoes on command line

Press [2nd][1] to enter the L1 list on command line

Press [,] to separate

Press [2nd] [2] to enter L2 on the command line

Press [,] the comma again

Press [VARS][>][Y-Vars][1~Function][1:Y1] [ENTER]

Press [GRAPH] to have the regression line equation drawn

on the same screen as the Scatter Plot you drew before.

When you perform the (linear) regression analysis LineReg, save the regression equation to a function, for example Y1

The syntax is

LineReg L1, L2, Y1 ENTER

From the Stat>CALC menu press LineReg

The command echoes on command line

Press [2nd][1] to enter the L1 list on command line

Press [,] to separate

Press [2nd] [2] to enter L2 on the command line

Press [,] the comma again

Press [VARS][>][Y-Vars][1~Function][1:Y1] [ENTER]

Press [GRAPH] to have the regression line equation drawn

on the same screen as the Scatter Plot you drew before.

Sep 13, 2011 | Texas Instruments TI-84 Plus Calculator

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.

Jan 05, 2011 | Texas Instruments TI-84 Plus Silver...

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.

Dec 04, 2010 | Texas Instruments TI-83 Plus Calculator

The following should help you draw several graphs.

When you enter a function you should press [ENTER] to validate. At the same time, the cursor moves to the next line. Verify that the = sign on the equation already entered is still highlighted.

If for some reason the = sign of an equation is no longer highlighted, use arrow keys to move cursor on the = sign and press [ENTER].

If only one = sign remains highlighted and all others are not, then in all probability the application Transfrm has been executed before and is still lingering in RAM. When in RAM, it takes over the graphing capabilities of the native OS. This prevents you from drawing more than one graph.You must unload it from memory.

When you enter a function you should press [ENTER] to validate. At the same time, the cursor moves to the next line. Verify that the = sign on the equation already entered is still highlighted.

If for some reason the = sign of an equation is no longer highlighted, use arrow keys to move cursor on the = sign and press [ENTER].

If only one = sign remains highlighted and all others are not, then in all probability the application Transfrm has been executed before and is still lingering in RAM. When in RAM, it takes over the graphing capabilities of the native OS. This prevents you from drawing more than one graph.You must unload it from memory.

- Press the [APPS] key.
- Scroll down to the line that shows Transfrm.
- Highlight it and press [ENTER].
- In following screen you are invited to Uninstall or continue.
- Press the number to the left of Uninstall. Validate if need be.
- Return to the Y= editor to type in functions to graph.

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

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.

Oct 25, 2010 | Texas Instruments TI-84 Plus Calculator

The Transfrm application for dynamic geometry is probably active in memory. You must purge it from RAM

- Press APPS
- Scroll Up or Down (Up is faster) to find Transfm.
- Select it and press ENTER
- Press the number corresponding to the option Uninstall.
- Once the APP is kicked out of memory you will be able to draw multiple functions.

May 10, 2010 | Texas Instruments TI-84 Plus Silver...

Hello,

Let us use the correct the terminology: You want to draw the graphics of two unrelated FUNCTIONS on the same calculator screen. That can be done but that does not make them a system of two equations.

Since it pains you to have to reset the calculator, I will try some solutions that may work within your constraints.

**Turn STATSPLOTs OFF**

[2nd][STATPLOTS][4:PlotsOff] [ENTER]

**Clear all lists:** Will erase contents of lists.

[2nd][MEM][4:ClrAllLists][ENTER]

Draw your graphs. If the ranges of the two functions do not overlapp they may not show on the screen with the SAME window dimensions.

If it works, fine. If it does not you will have to clear the RAM.

Let us use the correct the terminology: You want to draw the graphics of two unrelated FUNCTIONS on the same calculator screen. That can be done but that does not make them a system of two equations.

Since it pains you to have to reset the calculator, I will try some solutions that may work within your constraints.

[2nd][STATPLOTS][4:PlotsOff] [ENTER]

[2nd][MEM][4:ClrAllLists][ENTER]

Draw your graphs. If the ranges of the two functions do not overlapp they may not show on the screen with the SAME window dimensions.

If it works, fine. If it does not you will have to clear the RAM.

Oct 22, 2009 | Texas Instruments TI-84 Plus Calculator

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Tried the 3 suggestions below, but none made a difference - the problem persists.

Try to do next: you have to going into the memory men (2ND - +) and select option 2. Delete some stuff you know you don't need. If the problem still persists, 2ND - +, this time option 7. Reset the defaults. You won't lose anything, it will just reset the settings that may be causing this issue.

Or: Remove the four battery to reset everything. Not at all silver oxide battery

Finally, send to me over FixYa the mathematical problem which you have to resolve!

Hi Stevan, Thanks for trying to help but I think it a hardware problem - specifically reading out of RAM. I did the same problem on another Ti-84 and it all worked fine.

BTW, I did try all of your suggestions, plus others I have received on this site, and none of them worked.

Send to me over FixYa the mathematical problem which you have to resolve!

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