Top 20 Texas Instruments TI-84 Plus Calculator - Page 7 Questions & Answers

There isn't a dedicated key for the factorial. It's available via the menu by pressing MATH left-arrow 4.

What are you trying to do on the TI84 Plus. You don't say.

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. If you're trying something else when you get this error, please tell us exactly what you are trying.

There seems to be a limit on the number of trials you can use. The maximum number of trials that I could enter without getting the domain error is 119999. Memory limitations?

Square root of (y^5)

Minus and change-sign are two completely different things. Minus is used to subtract one number from another. When you press minus when the input line is empty, your telling the calculator to subtract. The only way it can subtract the number you're about to put in is to subtract it from something else, and that something else is the previous answer, hence the "Ans."If you want to input a negative number, use the change-sign key. If you want to subtract one number from another number, use the minus key.Try pressing the plus key when the input line is empty. You'll get Ans+ in this case as well, The same with multiply and divide, among others, and for the same reason.

It seems to me that the cursor (regardless of its shape) is always blinking. What is significant is the shape it has.Full rectangle: Overwrite character at the right.Underline : Insert mode, inserts next key press to the left of its location.Checkered rectangle: No entry is possible because command or memory is full.A in reverse video, in ALPHA mode.

Secant is the reciprocal of cosinesec(x)=1/cos(x)Do not confuse it with the inverse of the cosine function, which is arccos(x) =cos^-1(x)

I believe the liquid crystal of the LCD is leaking, maybe as a result of a careless handling(?)

Well first of all. Dry it a bowl of rice for a few days... (works with every thing hand held). My first guess is that you may have damaged the processor (don't bother trying to replace it). Or (if you can be bothered) open it up and look behind the keypad to see if the keys aren't caught on something. You can NOT return it because warranties don't cover water damage to electronics (normally).

What shape is the cursor in? If it is checkered then the command line memory is full, or memory is full. Try clearing the RAM. It is also possible that the key is not working anymore because of previous mishandling or old age.

You cannot get the calculator to behave as you describe just by connecting it to the computer. You must have done some other manipulations.Try to find a classmate who has the same calculator (TI84 Plus or TI84 Plus Silver Edition) and effect a transfer of the OS from the classmate's calculator using an IO cable.

Use 10^x (the 2nd function of the LOG key). For example, to calculate the antilog of 2, press 2ND LOG 2 ENTER

Press MATH 4 to access the cube root function. For example, to calculate the cube root of 8, press MATH 4 8 ENTER

You apparently have your calculator set to display no digits to the right of the decimal point. 5/2 is 2.5, which rounds to 3, and 50/100 is 0.5, which rounds to 1. To change the display setting, press MODE, highlight the desired settings on the first two lines, then press ENTER followed by 2ND QUIT. Try setting "NORMAL" and "FLOAT" and see what results you get now.

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.

http://wiki.answers.com/Q/How_do_you_turn_off_a_TI-84_plus_silver_edition_calculator Did you try this?

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.

Cosine values are between -1 and 1. The arcosine domain is between -1 and 1. The value you have is out of range.