Post your ideas for new math programs here, or build on ideas posted by other visitors.

Just yesterday,(April 21, 2007) I sent in my "Figure Solver" Prog (TI-92). It should be out of evaluation soon. It's listed under TI-92:Math:Figure Solver. You navigate the toolbar, popups, and Dialog Boxes to get your geometry related answer. I'm in 9th grade Geometry.(1st and only year in it.) It is a little big, however. (A little under 9000 bytes)

This program took me two weeks to complete (more attributed to my then noobish BASIC skills than the actual complexity of the program). The idea is to have the user input A,B,and C values and then have the program execute a quadratic equation, store both values, if the value is not a whole number then to simplify it via a customized fraction program (A --> B/C) and store the numerator and denominator (if there is one), and then output the values in A(Bx+C)(Dx+E)form. This program ended up being over 3100 KB for me, but it was awesome to have in math class and during tests. Unfortunately, I lost my calculator and forgot to store the program on my computer. Rediculously aggravating.

If you need help, e-mail me: pianomanhoffman@aim.com

ok, i have many programs that i have made in the past month or so and ive run out of ideas. basically i make a program for every chapter in pre cal, unless its boring. some things i have are a quadratic, composite trig, factor, foil, 4*4 matricies, and a calculus program using newtons method (very cool). i need some ideas, things that are cool to do. something that has exact answers is nice, cuz i like to manipulate the info and display exactly. also, if nebody has a quadratic program that they think is exceptionaly good, i would like to see it and compare it to mine.

Can I get LU factorization program? My calc is TI-89 titanium. please help me

I need LU factorization program. my calc is TI-89 titanium. plz help~

This is just to help any programers that want to "extract" a particular digit from a number.

iPart(fPart(A/10^x)10)

A = the number to be evaluated
x = which digit from the right to evaluate, starting with 1

EXAMPLE:
You have the number 9231798436, and you want to find out what the sixth number is from the right. Replace "9231798436" in for "A" and "6" in for "x" in the above formula and the result will be "7" because seven is the sixth number from the right, with the number in the "ones place" being the first.

This will help in case you have up to ten different single valued variables and want to store them as a single variable instead. You can reply to this, or e-mail me with any questions. (I probably won't check this forum though).

Hi guys,
I am taking pre-calc and need any and all programs to help with this class for my ti-83 plus. My prof gave me one for the quad form. I can't seem to open the files in the archives for more?? Can anyone email them to me as a word doc?

hoping that someone might be able to implement Del as an operator, that is:

(i'm going to use V for del op)
V(a) gives Grad of a
V.A gives divergence of A
VXA gives curl of A

aV gives unoperated vector [a(d/dx);a(d/dy);a(d/dz)]
A.V gives unoperated scalar Ax(d/dx)+Ay(d/dy)+Az(d/dz)

and so on... i don't imagine this to be very easy at all, but it would be so useful i think.

hello i need help to do 2 basic program
1 definition
to marketing program
then choose the word to get definition

2 cal.

DL=(A-B)\(C-D)
A is what put in ""
B is what put in ""
C is what put in "'
D is what put in ""
and the DL=XX

plz email me to
li_hung_lu@hotmail.com

thx guys

I was wondering if it would be possible to make a program for TI-84/83 that would factor simple things like 6x^2+x-2 or expand things like (x-2)(2x+5) etc.

I'm not that good, but I make a program that factors x^2+Ax+B, but it does't always factor Ax^2+Bx+C correctly

Basically, I used the quadratic formula but I run into problems with answers like 2/3 or 1/5. I want my calculator to give (-3x+2)(5x-1) not (x-.66667)(x-.2)

this is part of my program that i made off of the ones on the posts of this

I have a menu and im using 4 coordinates as it is for a quadrilateral, here is starting with slope

:Lbl SL
:If (C-A)=0
:Disp "C-A=9999"
:Goto B
:Disp (D-B)/(c-A)
:Lbl B
:If (E-C)=0
:Disp "E-C=9999"
:Goto C

this goes on till it covers all the slopes
For some reason it just repeats itself in a loop
It says that it =9999 meaning it is undefined and the rest of the slopes over and over again and doesnt break till i hit on. How do i stop it? I even tried pause, stop, and end after the slopes

I was wondering if i could get the code to create a base converter. I want it to be able to go from bin, oct, hex, to base 10 and also go from base 10 to any base. I can do a lot of the "nitty gritty" programing parts...i just need help on the complex programing codes.

If i can find a way to break apart a string/variable (the entered base to be converted) into individual numbers, i can fiqure it out from there. Thank you!

Does anybody haye a program that tells you the key code of a key that actually works? I tried all of the ones on the site and they wouldn't work. I have a TI-84 SE and I program BASIC.

Ok I know that there are programs that can graph x=, but I need a source code to manually input the program into my calc, b/c I currently don't have my usb with me and need a program badly
for a TI 83+ SE

or you can send one to me at jmckenzie1991@yahoo.com

I am trying to wrtie a program that will prompt 4 choices and then when you enter a choice A,B,C or D it will bring you to that program

something like

Disp "MATH FINAL"
Asks for an input.....or a prompt

IF i put in A
then program A

If i put in B
then program B

If i put in C
then program C

If i put in D
then program D

i already have the programs written i am just having trouble actually writing the mother-program to use the choices and bring me to the others

I am trying to wrtie a program that will prompt 4 choices and then when you enter a choice A,B,C or D it will bring you to that program

something like

Disp "MATH FINAL"
Asks for an input.....or a prompt

IF i put in A
then program A

If i put in B
then program B

If i put in C
then program C

If i put in D
then program D

i already have the programs written i am just having trouble actually writing the mother-program to use the choices and bring me to the others

I need help writing a program that will prompt 4 choices A,B,C,D and then once you put one of the choices in it will go to another program

it should look something like this

disp "MATH FINAL"

Input, prompt Z

"I want it to work like when it asks for an input or prompt if i put in A,B,C,D then it will go to that program"

If A
Then program A

If B
Then program B

If C
Then program C

If D
Then program D

I once used a program called GLOB that created squares on a cartesian plane, then allowed you to key in linear equations in the form of y=. When you entered the equation, the line would appear on the plane and hit the squares, allowing you to accumulate points. My students practiced their slope and intercept skills with glee until I erased my TI-83's memory one morning in a precaffeine daze. I have searched for this program for years since and never been able to replace it. I work in the 9th largest school district in the US and I know a lot of Algebra 1 teachers who would be hugely grateful to have this program because I do training for them. Can someone help me recreate this program?

**my calc is a TI-84 SILVER PLUS**

I was wondering if anyone knew where I could find a program that takes certain digits and a certain number, and finds all certain number digit numeric possibilities of lets say... greater than or less than that number of which contains the digits specified. I know this is extremely confusing, so I will provide an example of a problem that it would solve.

How many 3 digit-numbers greater than 240 can be formed by using three different digits from the set {1,2,3,4}?

I do know what the program options requirements are, I just cannot for the life of me determine how to create it myself.

It needs to ask the user how many digits the number is, store it, ask the user what the number is, store it, ask the user whether to determine greater than or less than, store it, ask the user how many digits the set is, store it, ask the user what the digits in the set are, store them, and then systematically determine how many whole numbers may be created using those digits and the specified number of digits within each whole number, without ever re-using the same digits in each whole number and display the result.

***and maybe for bonus and verification purposes it could also display the whole numbers created.***

If anyone can understand this post and could be able to help let me know, because I am completely lost on this task.

-Jake

:disp "Welcome"
:clrhome
:disp "N Integers 1-?" (change ? to the highest # you have)
:prompt N (must be put in every time)
:clrhome
:If N=2 (change to the next whole number on a number line)
:then
:prompt B,C (add 1 variable for every one(i.e.N=3 has prompt B,C,D)
:B*C->(store/STO>)Z (N=3 has B*C*D->Z
:disp Z
:End

You can do this over and over forever, just add (read the parenthesis)

I don't know how to program a TI-83 myself, but I could use a program to help me with factoring trinomials that would basically do this:
solve systems of equations like this:

xy=45

x+y=12

obviously, the values outside the = sign need to be changable for whatever i need to factor.
Thanks.