TI-83 & TI-84 Graphing Calculators

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Press the APPS button. You will see a list of all the applications that are currently on the TI-84 plus. Use the arrow keys to scroll down to the one you want to use and then press ENTER.

You open your Apps, which should be the purple button, and then you open inequalz, from there you can put in your inequalities and then hit graph and it will come up on screen.

This is probably because one of your stat plots is trying to use two lists that aren't the same length. If you are not using stat plots, then press Y= and deselect all the plots at the top. (For example, to deselect Plot1, press the up arrow key until it is highlighted and then press ENTER.)

If you are using stats plots, check to make sure that the lists being used are the same length and that they have at least one item in them. (You can see what lists are being used and set what lists are being used by pressing 2ND STAT PLOT [above Y=]. You can edit lists by pressing STAT and then selecting Edit...)

The invalid dimension error can also happen if you try to invert a matrix that is not a square matrix, (for example, a matrix with dimensions 2 x 3). Matrices can only be invented if they are square (for example, a matrix with dimensions 3 x 3).

I'll assume you mean TI-83+, as the TI-83 cannot archive programs. On the TI-83+, archived means that a program, list, equation, picture, or other item is stored in the calculator's Flash memory instead of its RAM. This can be used so that the item does not get erased when the RAM is cleared, or to reclaim free RAM for other programs and files. However, archived items cannot be executed or modified, so they must be unarchived first.

More calculator assistance is available at the related link "Cemetech" below.

:Input "X1",A

:Input "X2",B

:Input "Y1",C

:Input "Y2",D

:(D-C)/(B-A)->E

:Disp "SLOPE:",E

there isn't one.

Press the Y= button and type 'X+2' (not the quotes) next to Y1 (or any other Y will work). Then press GRAPH.

(To type X, press the X,T,θ,n button. If you don't see Y1= when you press Y=, press MODE and select FUNC, then try again.)

There are many random functions on a TI-84 calculator. Find them by pressing MATH, and choosing PRB at the top.

Use rand to generate a random number between 0 and 1.

Example; to generate a random number between 0 and 1, type:

rand

Use randInt( to generate a random integer between 2 integers (inclusive))

Example; to generate a random integer between 1 and 10 (including 1 and 10), type:

randInt(1,10)

Use randNorm( to generate a random number that is close to a certain number.

randNorm(x,y) will generate a number that is 95% certain to be within 2*y of x.

Example; to generate a random number that is 95% certain to be with 2*(.01) of 7, type:

randNorm(7,.01)

Use randBin( to simulate a certain number of trials based on their success rate.

randBin(x,y) will generate the number of trials of success rate y that succeeded if x trials were run. y must be a percent written as a decimal, so it must be between 0 and 1.

Example; to simulate how many trials will succeed if 50 trials are run with a success rate of 75%, type

randBin(50,.75)

An additional number can be added to tell the calculator to generate more than 1 number and put them in a list. These will run the command 5 times and make a list:

rand(5)

randInt(2,9,5)

randNorm(4,.1,5)

randBin(30,.25,5)

Graph the two lines or equations you want to find the intersection of. Then adjust the window so that you can see the intersection point. (If you don't know where it is, try pressing ZOOM and choosing ZoomFit.) Then press 2ND CALC (above TRACE) and choose option 5, intersect. Use the up and down arrows to select the first equation you want to find the intersection point on, and press ENTER. Do the same thing for the second equation. The calculator will now say "Guess?". Use the left and right arrows to move the x-like shape as close to the intersection point as possible, then press ENTER. The calculator will tell you the intersection point and the bottom of the screen.

If you get a NO SIGN CHNG error, then it might be because the intersection point is not on the screen. Change the window so that you can see the intersection point and try again. Also, make sure that your guess is somewhat close to the intersection point.

Some good websites are www.tiwizard.com or www.ticalc.org those are the best ones, i use them

http://sites.google.com/site/nxwkevstisoftware/

To graph y2 = -3x, first solve for y. Doing this results in two solutions:

y = √(-3x)

and

y = -√(-3x)

Put the first solution into y1 and the second solution into y2.

The two solutions together should form a sideways parabola.

To play Zelda on a TI-83 Plus, you'll need to download a homebrew version of the game compatible with the calculator. First, ensure you have the TI-83 Plus USB cable and the TI Connect software to transfer the game file to your calculator. Once the game file (usually in .8xp format) is transferred, you can launch it directly from the calculator's program menu. Keep in mind that the graphics and gameplay will be much simpler than the original Zelda games.

Its in the bottom right corner, on the negative sign. to get to it, hit '2nd' in the top left corner, and then hit the negative, and then you'll get the Ans key.

Press MATH and use the left or right arrow key to select PRB at the top. NCR will be the third option. This goes in between the two numbers, for example:

8 nCr 5

Press 2ND MEM (above +). Then choose the second option, Mem Mgmt/Del.... Choose the seventh option, Prgm.... Use the arrow keys to move the arrow on the side next to the program you want to delete. Then press DEL. The calculator will ask "Are You Sure?". Choose Yes.

2nd [CATALOG], solve( , enter equation, variable and guess after the bracket, close brackets with " ) ". You can also put lower and upper bounds after the guess.

mram ti 84 sequences

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Press 2ND TEST (above MATH). The less than sign should be the fifth option.

Mirage OS

Some TI83's can be set up differently, so it is highly recommendable to read the user guide for the TI83 in question. The user would need to go into the VarStat option and enter all the appropriate fields to have the calculator bring in the appropriate variables and totals.