20 Most Recent Texas Instruments TI-84 Plus Silver Edition Graphic Calculator - Page 8 Questions & Answers

There is an easier way. No deleting anything involved. When you turn on your calculator and it says "Garbage Collecting" take out all 4 AAA batteries. Then, either put those same 4 back in, or replace them with 4 new ones. Then, hold down the -CLEAR- button, and then at the same time, press on. If your batteries are almost dead, nothing will pop up but it will look like the screen is kind of flashing. New batteries will fix that problem in a jiffy, and then brand new calculator :) Worked for me, hope this helps!

Hello,
In parametric mode you are not drawing one function, but two functions X1(T) and Y1(T). If you use the DrawInv( command either on X1(T) or Y1(T) you get a syntax error.
However if you are drawing functions in Funct mode you can draw the inverse of the function that has been graphed.
Here is how you do it.

[2nd][Draw][8: DrawInv] [ENTER]
The command appears on the home screen, and you need to tell it the function it will act on. To do so press
[VARS] --> Y-Vars [1:Function]
and select the function you want, say Y1, if Y1 has already been defined.

DrawInv Y1 [ENTER]
Both Y1 and its inverse will be drawn.

Hope it helps.

The ERR:INVALID DIM error message may occur if you are trying to graph a function that does not involve the stat plot features. The error can be corrected by turning off the stat
plots. To turn the stat plots off, press {2nd}[stat plot], and then select 4:PlotsOff.

There must be a leak from the screen (liquid crystal).

There is a command called nDeriv( which you find in the catalog. To open the catalog of commands press [SHIFT][0] (CATALOG), then scroll down or press N to jump to the 1st command starting with N.Highlight the command then press ENTER. The command echoes on the main screen. Type in the function you want to differentiate, type in a comma to separate, type the name of the vatriable (X), then type in the value at which the derivative is to be evaluated. Close the right parenthesis, then press ENTER.This is what you see with the newer OS that has MathPrint With the newer OS with MODE set to Classic, here is what you see.Hope it helps.

Clearing the memory erased the RESID list. You can recreate the list by calculating a simple regression.

If you have used the Transfrm app before it remains in memory and prevent drawing more than one function. Tou must uninstall it. Press Apps, select Transfrm, and run it. You will get a screen where you are asked to continue or uninstall. Select Uninstall and press Enter.After unistalling Transfrm you will be able to graph more than one function,

Use the TVM (Time Value of Money) solver. Press APPS 1 1. Fill in the known values, then scroll down to the item you want to solve for and press ALPHA ENTER.

Remove all four AAA batteries. Press and hold the ON key for ten seconds. Replace the batteries.

It denotes an exponent of ten. For example, 1.1E4 means 1.1 times 10 to the 4 or 11000 (eleven thousand).

Remove one of the AAA batteries.Press and hold CLEAR while reinstalling the AAA battery. Continue holding CLEAR button and press ON.Release buttons and press CLEAR again.

See if your setting are on degree or radian settings.

I just had this problem: shortcut menus used to work, but stopped, with TI Version 2.55 MP. I discovered that running the preloaded app PlySmlt2 (others work, too) and quitting it fixed the problem, but that later running a non-TI app caused the problem again. So the non-TI app may be misbehaving, as suggested in this TI knowledge base article.

You can either press the ZOOM button (on the top row) and zoom in/out or, if you know the coordinates you want, press the WINDOW button (also on the top row) and enter the coordinates.