Question about Texas Instruments TI-84 Plus Calculator

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My calculator has stopped working. i used to be able to turn it on but i could never type in any function or even turn it back off. ive now replaced the batteries with new ones and it wont even turn on now. its been a month since its stopped working and ive only had it for about two-three months now

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  • kakima May 24, 2011

    TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible. Does it?



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Having gone over two months without a response to my query, I assume the suggested contrast adjustment solved the problem.

Posted on Aug 14, 2011


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Calculator turns on, but cannot turn off and no other buttons work.

If the TI-84 does not function even though you are sure that the
batteries are fresh, you can try manually resetting it by following steps:

1. Remove all of the AAA batteries from the graphing handheld

2. Press and hold the ON key for ten seconds

3. Replace the batteries

4. Turn on the unit

When you reset your graphing handheld, the contrast sometimes
changes. If the screen is faded or blank, adjust the contrast by
pressing 2nd and releasing up-arrow or down-arrow keys.

Aug 28, 2012 | Texas Instruments TI-84 Plus Calculator

1 Answer

I typed in solve(sin(x^3-x)>0,x) and

You demand is to say the list unreasonanble. What you are trying to do is to find all the values of x that make sin(x^3-x) larger than or equal to 0. There is an infinite number of them: remember that the sine function is periodic. The algorithm of the solve( looks for the values of x where the expression inside the command nears zero.
What you need is a program for the TI that solves inequalities. You may want to go to the web site to look for such a program.

To show you that even when you are looking for the zeros you have an infinite number of them.


Apr 27, 2011 | Texas Instruments TI-89 Calculator

1 Answer

Can I do numbers squared on this calculator, and how would I enter this?

The TI-30XA is a scientific calculator with many functions. You can calculate problems with fractions and decimals, as well as solve problems of probability and functions. A scientific calculator computes the number sentence you type in using the order of operations: parentheses first, then roots and exponents, then division and multiplication and, finally, addition and subtraction.
How to Use a TI-30XA
  • Step 1Press the [ON/C] key to turn on the calculator. Press the [OFF] key to turn it off. To use the calculator in solar mode, put the solar panel in the light and then press the [ON/C] key. To turn it off when in solar mode, slide the calculator cover back on and it will automatically shut off.
  • Step 2Replace the batteries by first removing the cover and placing it face down. Use a Phillips-head screwdriver to unscrew the back panel. Remove the back panel and change the batteries. Screw the back panel back on. Press [OFF] [ON/C] and [ON/C].
  • Aug 08, 2010 | Texas Instruments TI-30XA Calculator

    1 Answer

    Ti-83 plus silver edition, battery drain, ive

    The Texas Instruments TI-83 is a graphing calculator. It's aimed towards math and science students and lets them graph and compare functions, perform data plotting and perform analysis. It has an updateable memory for adding software applications. The device comes pre-loaded with applications too. An optional connectivity kit allows you to hook the device up to your computer, and there are also optional slide cases to protect it.
  • Turn on the TI-83. Press the On button.
  • Step 2Adjust the display contrast. Press and release the key marked "2nd" and then press and hold the arrow buttons, which are below and above the yellow half-shaded circle.
  • Step 3Go to the Home Screen. You can do this from anywhere. Just press the button marked 2nd and then Quit.
  • Step 4Perform a sample calculation to get the hang of how to use the device: Model flipping a coin 10 times. Track how many of those coin flips end up in a heads result and you want to do this simulation ten times. Press Math and the left arrow which will bring up the MATH PRB menu.
  • Aug 02, 2010 | Texas Instruments TI-83 Plus Calculator

    1 Answer

    I tried to draw a graph manually but I kept getting an error message even thoug I did it step by step like the users guide instructions said

    Error messages are important to help solve the problem.
    Try the following instructions to draw the function Y=5X+2
    but first Reset the calculator by pressing the RESET button on back of calculator. I do not want you to run into problems created by old settings.
    1. Turn calculator ON. If you do not see several icons press [MENU].
    2. Use arrow to select the [GRAPH] application and press [EXE].
    3. In the entry screen, the line with Y1= is highlighted. If it is not, use arrow to highlight it.
    4. Press the right arrow, the highlighting disappears leaving you with Y1= and the blinking cursor.
    5. At the position of the cursor type 5 then press the [X, theta,T] key, under the [ALPHA]. On the screen appears 5X, complete your equation by typing [+] 2
    6. Press [EXE] to store function.
    7. If you want to draw other functions, it is time to do so on that screen.
    8. When done, press [F6:Draw].
    9. If the screen does not show a lot of the function, you can use the arrow keys to pan (move the center of the graph. You can pan Up, Down, Left, or Right.
    10. You can also press [SHIFT][V-Window] to set the window limits.

    Feb 17, 2010 | Casio FX-9750GPlus Calculator

    1 Answer

    How do I stop getting the synthx error

    The calculator will stop screaming out SYNTAX ERROR, when you stop ordering it to do things the wrong way.
    Take a look at the manual.
    For certain calculations you enter the number first and then press the function key.
    For others, you press the function key then the number.
    If an expression contains a left parenthesis, it must also have a closing right parenthesis.
    It you want to enter negative 5, you use the change sign (-) not the regular MINUS sign.
    These are exemples of instances where you get a syntax error. For every new type of calculation you have to perform, read the exemple in the manual to find out which must be entered first: the number or the function.
    Hope it helps.

    Sep 30, 2009 | Texas Instruments TI-30XA Calculator

    1 Answer

    Sceen keeps saying RAM cleared even when I didn't clear it.

    There is a small round battery under a small rectangular cover just above the other triple A batteries. It has most likely gone flat. try replacing it, then see if it works properly.

    May 12, 2009 | Texas Instruments TI-83 Plus Calculator

    1 Answer

    TI-84 Plus: Calculator Unresponsive

    Try pressing the "On" button a couple times. That should work

    Oct 27, 2007 | Texas Instruments TI-84 Plus Calculator

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