TI-83 & TI-84 Graphing Calculators

The TI-84 plus has 480 KB of FLASH ROM (for things like applications), and 24 KB of RAM (which is the active memory that the calculator is using, as well as basic variables and non-archived programs.)

Press 2ND Catalog (above zero) to access the catalog.

The TI-83 and TI-84-series calculators all have the ability to store programs written in TI-BASIC language. There is a built-in editor that can be accessed be pressing [PRGM][>][>], choosing 1. New, typing a program name (up to eight letters), and hitting [ENTER]. If you want to just type text instead of write a program, you can use the same editor. However, there are alternatives. The SourceCoder 2 tool lets you type out programs and documents on the internet, store them to .8xp files, and load them onto your calculator. You can use it at http://sc.cemetech.net . You can also use TI's Notefolio application, available from http://education.ti.com , or Document DE 6, at http://www.cemetech.net/projects/item.php?id=6 .

By pressing the 2nd function button and then the equals sign, it will make it so you can edit again.

Try removing the batteries, if that doesn't work did the calculator come with a cable connecting it to the computer? (If it does plug this into the computer and it should hopefully un-freeze)

If you mean X multiplied by Y, then you can just enter XY, and press enter. of course you first have to enter values for X and Y with: (number)->X (number)->Y (->) is a representation of the STO> key.

It is possible to do by putting pictures into groups.

To make a group and put pictures into it, first press 2ND MEM (above plus) and choose Group. Choose Create New and enter a name for your group. Press ENTER and then choose Pic. Select the pictures you want by using the up and down arrows and press enter, then choose done at the top and press ENTER. You pictures will then be added to that group.

(A group must have at least two items in it.)

In order to access those pictures, you will need to ungroup them. Do do this press 2ND MEM, choose Group, choose Ungroup at the top, select the group your pictures are in, and press ENTER.

It may bring up a menu if you have pictures in the normal place. In this case you can overwrite those pictures and now you will have access instead to the pictures that were in the group. If you want to save the pictures that would be overwritten, be sure to put them into a group before overriding them.

When you ungroup the pictures, the group containing the pictures will still exist, so there is no need to put those pictures back into a group (unless of course you delete the group itself).

Groups are also safe from RAM being reset, so putting your pictures into groups also serves as a way to make sure that are not deleted in situations such as changing the batteries.

hit prgm on our calculator

First, store the x-values to L1 and the y-values to L2.

Go to the statistics menu by pressing [STAT], go to the calc menu, and choose a regression. Let's try linear. Select LinReg(ax+b)

That is now on the home screen. Put L1,L2 after that, so the home screen looks like:

LinReg(ax+b) L1,L2

press [ENTER]

now press [2nd][LIST], which is the second function of the stat button.

Scroll down, there will be the text RESID somewhere on the list. Press enter when you have found it. That is a list containing the residuals, and you can use it just like you use L1 and L2, though it changes whenever you do regressions, so you might want to store it to L3.

To type a fraction such as 5/8, enter 5 divided by 8, or 5/8. To type a fraction like 42/3, enter (4 + 2/3). To veiw your answer as a fraction, press MATH and select option 1, >Frac (after you have done your calculation). You should see Ans>Frac. Press ENTER.

There isn't a sec key on the TI-83 Plus. Secant is 1/cosine, which is what is used to find secant on a TI-83 Plus. For example, to find the secant of 4, enter 1/sec(4).

To graph inequalities (y is 'less than', 'greater than', 'less than or equal to', or 'greater than or equal to'), turn on the Inequality Graphing app. Do to this, press APPS and choose Inequalz.

You should see the 'less than', 'greater than', 'less than or equal to', or 'greater than or equal to' symbols at the bottom of the Y= screen. To change and equals sign to one of those symbols, highlight the equals sign, press ALPHA, and then press the button directly under the sign you want to use (ALPHA TRACE for greater than, for example).

To turn of Inequality Graphing, press APPS, choose Inequalz, and then choose Quit Inequal.

you press the dot

get a new one

The TI-83 calculator uses 4 AAA batteries.

To enter an arrow (pointing right, that is that only arrow there is), press the store key, which looks like STO>.

The arrow is used to store data to variables (these variables are like boxes that hold information, not the kind that you solve for in algebra). For example, if you type 5->A, then A will now be equal to five.

The easiest way to use a fraction on the TI-84 is to type it in like this:

(1/2) for one half

(3/4) for three fourths

etc

Use the division sign as the fraction bar, and put the whole fraction in parenthesis. Make sure you use the parenthesis, otherwise your answer will come out incorrect.

give print then select print to file give the file name that file may prn file by

The arrow keys are near the upper left corner of the keypad.

If you want to type an arrow, use the store key. It looks like this: STO>.

Yes. For example, if you want to calculate combination(9,3), press 9 and then press MATH. Use the arrow keys to scroll over to PRB at the top and select nPr. Then press 3. You should see:

9 nPr 3

Press ENTER.

First press 4. Then go to MATH and choose option 5, which looks kind of like *√. Then type the number that would go under the radical. For example, to find the fourth root of 256, type 4*√256.

Use the float feature found on the mode button. Press mode and then select a number next to FLOAT. If FLOAT is selected, the calculator will not round. Selecting a number next to float will round to that many decimal places.

X^2/a^2 + Y^2/b^2 = 1

a = 2

b = 4

X^2/4 + Y^2/16 = 1

multiply through by 4

X^2 + Y^2/4 = 4

Y^2/4 = 4 - X^2

Y^2 = 4(4 - X^2)

Y^2 = 16 - 4X^2

Y = +/- sqrt(16 - 4X^2)

one of many ellipses possible ( don't for get to enter bot + and - terms )

Mode-->mathprint-->classic

yes --------like brain: input, output, storage, retrieval, computation, problem solving, ect. It is the PC: install program Software to Operate & attach Hardware to access to System.