TI-83 & TI-84 Graphing Calculators

Press MATH and select PRB at the top. The third option, nCr, is combination.

Example: To find C(10,4) type:

10 nCr 4

The calculator continually consumes a small amount of power to store data in temporary RAM memory. That is why it is recommended that you archive all of the programs and data on your calculator before you change the batteries; if you do not, there is a chance you will lose the data saved in the temporary RAM memory when you remove them. When your batteries get low, the power in the spare button battery will start to be consumed (it acts as the battery backup so you do not lose data right away when the main batteries die).

On a side note, if you are interested, head over to www.calc-tech.com to download software for your TI graphing calculator to help you improve your score on the math section of the SAT I reasoning test. SAT_OS is a software package that can be used during the actual SAT test and is known to improve scores by over 60 points just by using the software. It allows the users to complete calculations faster and more accurately than otherwise would be possible by hand.

Check your batteries

write a song about love and companionship to take the blues away. ooh yeah.

Press MODE and select DEGREE if you want your calculator to be in degree mode in stead of radian mode.

If you want the degree symbol, press 2ND ANGLE (above APPS) and choose the first option.

yes, and usb cable that fits, will work.

Yes

The standard window goes from -10 to 10 for both the x and y coordinates.

The settings are:

Xmin = -10

Xmax = 10

Xscl = 1 (The increment of tic marks on the x-axis)

Ymin = -10

Ymax = 10

Yscl = 1 (The increment of tic marks on the y-axis)

Xres = 1 (The quality of the graph.)

not that i can tell

look at the directions mabey it says something that you missed

To type an x, if you are in function mode, press the variable button. (The one that says X T θ n.) If you are not in function mode, press ALPHA and then the button with a green X over it.

Here is an example of how to find the vertex of y=(x+1)2 + 2 by graphing.

First enter (x+1)2 + 2 into Y1 and graph it (press Y=, enter the equation, and then press GRAPH).

You should be able to see the vertex (if not press ZOOM, then ZStandard to reset back to the standard viewing window.) You need to know if the vertex is a minimum or a maximum. In this case, it is a minimum. Press 2ND CALC (above TRACE) and select minimum. (You would select maximum if the vertex were a maximum.

The calculator will ask for a left bound. Use the left arrow key to move the flashing start to the left of the vertex and then press ENTER. The calculator will then ask for a right bout. Move the flashing star to the right of the vertex and then press ENTER. The calculator will then ask for a guess. Move the flashing star close to the vertex (between the bounds you set) and pres ENTER.

Then calculator will then display the coordinates of the vertex. In this case, it will say that x is -1 and y is 2.

Did you put the extra

:"(description)

as the top line of code

Press MATH, choose NUM at the top, then choose round(. Type 0.9528, then a comma, then the number of digits you want to round to. For example, to round to three decimal places, type:

round(0.9528,3)