Ti-82 Programming?

Question

Can someone please tell me how can I make some programs in my calculator to calculate geometry stuff like : mid point, distance between 2 points etc... I have a Ti-82

Thanks a lot it would really help me

Answer 1

I am not as familiar with the TI-82 as with other models, but they mostly have the same basic programming functions. I'll go over creating a program to calculate the distance between two points on the Cartesian plane. Press the PRGM button and create a new program. A menu should be available with all the different programming commands. can be found under the "I/O" menu, otherwise you can type it in...
:INPUT "enter x1", A

I'm using simply 'A' because I believe this model allows only single-character variable names. Similarly, to obtain the rest of the values...
:INPUT "enter y1", B
:INPUT "enter x2", C
:INPUT "enter y2", D

Now to do the math... to get the "→" symbol, press the "STO►" key...
:√((A-C)^2+(B-D)^2)→E

The result is now stored in memory location 'E.'

To display your result...
:DISP E

And that's the end of your program.
Feel free to email me for any clarifications, or better yet, consult your user's manual.

Answer 2

Would someone be able to tell me how to use the same calculator for simple things like adding and subtracting? Sheesh, programs just keep popping up and I can't even figure out the basic stuff! I wouldn't even know where to start for your question!

Good luck with your calculator, I think I'm going to sell mine to someone who is more technology-friendly.

Answer 3

Hit program/new and enter name of program.
program/io/8 gives you
...ClrHome
program/io/input gives you
...Input and then you add "x1 :",A
...Input "y1: ",B
...Input "x2: ",C
...Input "y2: ",D
then for midpoint
...Disp "mid"
...Disp {(C+A)/2, (D+B)/2}
and for distance
...Disp "dist"
...(C-A)²+(D-B)² sto E
...Disp √E

Try going online to TI.com and see what you can find.