Question about Texas Instruments TI-84 Plus Silver Edition Graphic Calculator

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My calculator wont let me get off the opening screen

It wont let me use any buttons and the cursor wont move. it is like it is frozen but the cursor blinks

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Re: my calculator wont let me get off the opening screen

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Why is my calculator frozen?

Is the cursor checkered? If so, there is no more space on the entry line. Use the DEL key to shorten it or clear it. Clear the RAM also.

Jul 19, 2014 | Texas Instruments TI-84 Plus Silver...

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My calculator keeps rounding to the tenths place, I read I need to go to mode and change a setting, but I cannot find mode?

I am describing the procedure for the CAS with OS version 2.1 But it should work for your calculator.

  1. Turn calculator ON
  2. Press The HOME (House icon) button.
  3. Press digit key 5 to open Settings and status.
  4. In menu options, select [2:Settings]
  5. Use the arrow (right) to open the submenu options and select [1:General]
  6. The cursor should be on drop down box labeled Display Digits
  7. Use down arrow to open the number display format, and select Float 6 (an appropriate choice most of the time. If you want more digits, set Float 12)
  8. Press [ENTER] or Click to validate your selection.
  9. The drop down box will close.
  10. Use the TAB button to move to another Configuration setting. Pressing the TAB twice will take you to Exponential format.
  11. Use down arrow to unfold the Exponential format menu.
  12. If you do not need Scientific Format, use Normal and validate.
  13. Press TAB several times until cursor reaches OK.
  14. At this point Press ENTER to save Configuration.
  15. This should solve the problem.

As I said, this describes the procedure for OS version 2.1. Once you find out how to enter the setting screen, do as I described above, and do not forget to validate by getting the cursor on OK and validate.

May 01, 2011 | Texas Instruments TI-Nspire Graphic...

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My calculator is completely non responsive. When I hit the on button, the calculator cursor comes up but does not blink or allow me to type anything in. I have to hold the on button to keep the cursor...

It sounds as if the batteries are dead. If you are having to hold the power button on to keep the cursor on the screen, that is because the batteries only have enough power to flash a cursor, holding the power key means that the flash is constant. Try changing the batteries, this should solve the problem.

Apr 27, 2011 | Texas Instruments TI-84 Plus Calculator

2 Answers

How do I get my ti-nspire to give me answers in degrees? I have everything set to degrees, yet it spits out the wrong answer.

The following screen captures pertain to TI Nspire OS 2.1
Turn calculator ON. It calculator is not in HOME screen press the HOME button.k24674_32.jpg

Press digit key 5:Settings and status. Select 2:Settings, then 1:General



On sdecond line Angle open the drop down window and select Degree.
Use TAB a few times to move cursor to the OK button. and press ENTER.

Mar 10, 2011 | Texas Instruments Calculators

1 Answer

I get ERR: DOMAIN everytime I try to inverse a matrix

  1. First, Press the "MATRX" button

  2. Next, enter a matrix into the calculator. To enter a matrix, press the arrow that points to the right two times when the cursor highlights letter "A." This moves the top cursor to "Edit." Press "Enter" to select the "Edit" option.

  3. Next,, enter the matrix's numbers into the matrix on the calculator. Press "Enter" to move the cursor over one column. Press a button that has a dash symbol within parenthesis [( - )] to move down one row. Repeat the steps until the matrix is completed.

  4. Next, Press "2nd" then "Mode" to go back to the home screen. Press "MATRX" to enter the matrix screen again.

  5. Finally, press "Enter" when the cursor highlights matrix "A" then press "[x^ -1]." Your screen should read "[A]^ -1." Press "Enter" again to display the inverse matrix.

    I got this information from

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

1 Answer

How do get the determinant from a 4 x 4 matrix

To create the matrix (in case you do not know.)

  1. Press [2nd][X^-1] to access the (MATRIX) menus.
  2. Use the right arrow key to move to the tab [EDIT]
  3. Under tab EDIT, press 1 to name the matrix as [A]
  4. A matrix template opens (default dimensions are 1x1)
  5. Change the dimensions to 4x4: Press digit 4 key and ENTER. Cursor move to 2nd dimension. Type in 4 and press [ENTER] to validate.
  6. The matrix template changes: screen shows a matrix, filled with 0.
  7. Enter the value of each coefficient and press [ENTER]. The cursor move to next coefficient.
  8. After you validate all values, press [2nd][MODE] to (QUIT) the matrix editor.
To calculate the determinant of a matrix that is already defined.
  1. In main calculator screen press [2nd][X^-1] to open the (MATRIX) functions.
  2. Use the right arrow once to highlight the [MATH] menu.
  3. Select [1:det(] and press [ENTER]
  4. The command det( echoes on main screen.
  5. Press [2nd][X^-1] to opent the (Matrix) menus again.
  6. Select the number in list that corresponds to your matrix (presumably 1:[A]) and press [ENTER]
  7. The command line shows det( [A]
  8. Complete the command by closing the parenthesis and pressing [ENTER]
  9. Wait for the result to be displayed.

Nov 01, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

My ti-89 screen is frozen and wont accept input

Remove the batteries and wait a minute or two. Put them back in and turn the calc back on and it should function normally. Check for stuck buttons as well, as sometimes they will cause the calc to appear "frozen".

Sep 30, 2010 | Texas Instruments TI-89 Calculator

1 Answer

How do i restore the directory

If you want to restore the directory hierarchy that contains the examples and sample programs that shipped with the calculator
  • Press [alpha][alpha] to lock the alphabetical keyboard.
  • Press [TEACH] then [ENTER).
  • The programs and examples will be restored.

If you want to create a directory (from scratch)
  1. Press [Right Shift Cyan key] and [HOME] to get back to the main directory.
  2. Press [Right Shift Cyan key] [VARS] to access (MEMORY) management
  3. Press the [D:New] tab
  4. The new variable screen opens
  5. Use the DownArrow twice to move cursor to the third line (_Directory)
  6. Press [C:Chk] to put a Check mark to the left of Directory
  7. The screen will change to show [Name and Directory]
  8. Use Up Arrow to move cursor to the first line (Name)
  9. Press [A:edit]
  10. Enter the name and then press [F:OK]
Once the directory is created you can use the Memory management to copy OR Move objects from other directories to the new one.

May 10, 2010 | HP 48gx Calculator

1 Answer

Im in the matrix B, but I do not know how to erase the 2x2 off there to start over again?

You can open the memory management program and delete the Matrix B.
  1. Press [2nd][+] to open (MEM)ory management.
  2. Select [2:Mem Mgt/Del..]
  3. Press [5:Matrix]
  4. In the list of Matrices , use the down Arrow to move cursor to the level of Matrix B and press [DEL] to delete it.
  1. Press [2nd][X^-1] to open the (Matrix) editor
  2. Use the right Arrow to highlight [EDIT],
  3. Use the DownArrow to highlight [B] or press [2:[B]]
  4. The editor screen opens, with the cursor blinking on the first dimension
  5. Change the first dimension
  6. Use the right arrow move cursor to the 2nd dimension and change it, then [ENTER]
  7. In the matrix template that opens, type in the values: the old values will not be erased, so make sure you change them if necessary.

May 05, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

How do i perform linear regressions on TI-Nspire Individual Handheld

Start by creating the data lists.

  1. Press Home.
  2. Use navigation pad to Highlight [3: Lists and Spreadsheets]
  3. Press Enter
  4. A list opens with cursor in Cell A1.
  5. Use UpArrow to move the cursor to the header of the list and give it a name, say X.
  6. Press Enter. Cursor moves to Cell A1
  7. Enter an X-value in each cell and press ENTER to move to next cell:
  8. Type 1, and press ENTER. Say Yes to overwrite message by pressing OK.
  9. Enter 2,3,4,5,6,7,8,9,10 (just a bogus sample).
  1. After typing 10 in cell A10, press ENTER to validate.
  2. Use the Navigation pad to move cursor to the head of the B column.
  3. Give it a name , say Y.
  4. Press ENTER, Cursor moves to cell B1.
  5. As for X-list, enter the Y values. Here is a sample (-2, -1, 0, 1,2,3,4,5,6,7). After you type value in B1, accept the overwrite message by pressing OK. Type the other values.
  6. Make sure that the X-List and Y-List have the same number of elements, otherwise you will have a dimension mismatch error.
  1. While the lidt is still displyed, prress the Menu key
  2. Highlight [4:Statistics]
  3. Use Right Arrow to unfold submenu list and select [1:Stat Calculations]
  4. Use right Arrow to unfold the submenu list and
  5. Select [3:Linear regression (mx+b)] or [4:linear regression (ax+b)]
That is what you see.
Using Tab to move from one line to the next, configure the calculator as seen on the next screen.
And the last line is at the bottom of the next screen capture

The statistical results will hence be displayed in the C[] column.
Use TAb to move focus to OK, and press ENTER.
Here they are.

You can recognize each statistical results, RegEq is y=mx+b. You also have m, b, r^2, and r. The residuals appear on the next row. By highlighting the cell with the {0.,0...0} you can display the hidden values

Here you have all you asked for. But you can go further by drawing the curve.

The regression equation is stored in function f1, so you have to draw the f1 function. .


Press the HOME button
Highlight and select [2:Graphs and Geometry]
At the bottom of the screen there is a command line with f2(x)=
Use the UpArrow to display the f1(x)= equation

Press ENTER to draw the function f1

I think I have to stop here. There is enough material to get you started.
I left for you the part where you draw the data points. read the user manual.

Jan 28, 2010 | Texas Instruments TI-Nspire Graphic...

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