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

I have created a pretty big program that can solve linear and quadradic equations solve different types of shapes ranging from triangles to cones and some other things but im trying to make a probability section and found i can't make it so that you can enter a certain specified amount of numbers "x" and have them all be multiplied to gether. Can anyone help me!!!
i dont have a link cable and i have a ti 83+

Hey Cannon could you please email me the conic and the probability program. aaaaaaaai have a TI-83 plus. I really need it. I am in grade 12 and need programs. MY e-mail address is

umadkhan52@yahoo.ca

Hey Cannon could you please email me the conic and the probability program. I have a TI-83 plus. I really need it. I am in grade 12 and need programs. MY e-mail address is

umadkhan52@yahoo.ca

ok... I'm kinda new at programming. I have a ti 89 and im trying to write a program that works with the table on the calculator. like your given two coluns find the third. i.e. (r2c2-r1c2)/(r2c1-r1c1)and to go down the entire able and do that. i dont know if i have to enter all the numbers into the table first then run it, or if i could put the numbers into the program and it would put the numbers into the table. im stumped, i'll be looking online for help and any help would be appreciated. thanx!
heres my e-mail
please include somthing like ti89 help. Im very cautious about viruses, ive had a few.
Barney1585@hotmail.com

I make websites for money, and I like programming my 83+ (BASIC) for math tests and such. So I was wondering if anybody was intersted in aiding me in a website for TI-83+ programming, or if it really gets off the ground, expand to different calculators. I want to make it the most informative TI programming site but I'm only one person. If I could round up a good team, that would be awesome. E-mail me at andrewvan@mail2studio.com

Hey,
I would be willing to help. I can make programs that will help students in math if they can tell me what the need to use it for. Other wise i can make some very simple games such as Mastermind or other simple games like that e-mail me if you would like my help.

I also wouldn't mind helping. I've made programs for chemistry, physics, and all my math classes. I also can make simple games like mastermind and stuff like that. E-mail me at tenniskid493@sbcglobal.net if you need me

hey i tried send you an email for the programs but is say errors can you tell me you other emails?

You want the website or programmers? I'll give you a subdomain on my website, say TO.solafidefarms.com. It would have to be something.solafidefarms.com. I would help with the programming too.

Hey. I have a lot of TI-BASIC programming experience and would love to be a part of this. I have 30 programs in my calculator (all written by me) that are very useful. email me at gtr1500@yahoo.com

Hello, I need an Algebra program that can add up regular algebra. Can anyone help me

You still confuse me, what is adding up algebra?

P.S. You STILL confuse me becasue I already asked the same question on your other post.

Ditto for me

i think he means adding two algebraic equations and returning a third i could easily be wrong though

Over the past year, I learned how to program extremely well on the TI-83+. A couple days ago, I received a Voyage 200 and I am having trouble learning to program on it. Does anybody know of a site that teaches programming for the 89/92/V200? Also, I really need to know how to access specific elements of matrices/lists (On the 83+: list(element) or matrix{row,column}). Please help!

i have an 89 so things may not be exactly the same. But if you find math (above the 5 for 89's) you get a menu full of stuff. Look in the folder "list" for the things pertaining to lists and "matrix" for the matrix operations.

if its not there, look through the catalog.

p.s. i have not found a good prorgramming site yet.

well you could download some programs for it and just look at the source code

hi,

For some time i have been working on a program to symbolically differentiate functions. The iteresting part about it is that it shows the work involved.

There is only one problem left, and it's pretty stupid. When the 'work' from a calculation is shown it tells you on what rule it is based. But it is in Dutch! I do not know how you call these rules in English. I'd really appreciate it if somebody could post the following rules with their English names so I could use those:

I assume f(x) and g(x) to be functions, x to be 'the' variable, and n to be some constant.

d/dx f(g(x)) = f'(g(x)) * g' (freely translated from dutch it is "chainrule")

d/dx f(x)*g(x) = f'(x)*g(x) + f(x)*g'(x)
d/dx f(x)*n = f'(x)*n
d/dx f(x)/g(x) = (g(x)*f'(x)- g'(x)f(x))/(g^2(x))
d/dx f(x)/n = f'(x)/n
d/dx n/f(x) = n/f'(x)

d/dx f(x)^n = f'(x)n * f(x)^(n-1)
d/dx n^f(x) = log(n)*n^f(x) * f'(x)

And some unnamed rules in holland (but could have names in English, i do not know)
d/dx f(x)^g(x) = f(x)^g(x)(g(x) * f'(x)/f(x) + Log(f(x))*g'(x))
d/dx Log(f(x),g(x))

I tried some sources on internet, but couldn't find what i was looking for.

Thanks in advance,
Arno Kret

Hello.

d/dx f(g(x)) = f'(g(x)) * g' is in fact called the chain rule.
d/dx f(x)*g(x) = f'(x)*g(x) + f(x)*g'(x) is called the product rule.
d/dx f(x)*n = f'(x)*n is called the constant rule.
(So is d/dx f(x)/n = f'(x)/n)
d/dx f(x)/g(x) = (g(x)*f'(x)- g'(x)f(x))/(g^2(x)) is called the quotient rule.
d/dx f(x)^n = f'(x)n * f(x)^(n-1) is called the power rule.
d/dx n^f(x) = log(n)*n^f(x) * f'(x) I assume is exponential.

d/dx n/f(x) = n/f'(x), and d/dx f(x)^g(x) = f(x)^g(x)(g(x) * f'(x)/f(x) + Log(f(x))*g'(x)) aren't correct. For example, n/f(x) where n = 3 and f(x) = x^2, d/dx n/f(x) = -6/x^3.

And for the last thing... d/dx Log(f(x),g(x)). This doesn't equal anything, so what does it resolve to? Also, what's with the comma? Is it a reference to a binary operation? Without an arithmetic operator between the two functions, I have no idea what it's supposed to be.

Hope this helps.

I have verified the rule for d/dx n^f(x) = log(n)*n^f(x) * f'(x) is in fact the exponential rule.

For d/dx n/f(x) = n/f'(x), if you apply d/dx to that expression, just like with the constant rule the n comes out in front. Then you're left with d/dx 1/f(x).
Correction for d/dx f(x)^g(x) = f(x)^g(x)(g(x) * f'(x)/f(x) + Log(f(x))*g'(x)): this is correct. The TI's love to simplify before displaying the answer, especially the TI-92. I used Maple 7 to verify the formula. It is correct. I still have no idea what it is formerly called, though.

thanks alot.

and for the log(..,..). Its just some notation thing, first you start the base then, after the comma, you take the number. EX: Log(10, 100)=2. It doenst equal anything because i was to lazy to type it out.

I see what you mean by the Log thing. I'll use the same notation as you used for writing a Log here.

Log(f(x),g(x)) = Log(f(x))/Log(g(x)).

To do the derivative of this, you would use the quotient rule since you have a function in the numerator and a function in the denominator. Then for the derivatives of Log(f(x)) and Log(g(x)) just use the rule to find those derivatives:

d/dx Log(f(x)) = f'(x)/(ln(10)*f(x)),

or to make it easier to see:

d/dx ln(f(x)) = f'(x)/(f(x)).

Again, still don't know what it's formerly called.

Ha ha... I got it backwards (well, upside down). The notation was

Log(f(x),g(x)).

This means that the base is f(x) and the argument is g(x).

It should look like this:

Log g(x)/Log f(x).

Everything else should be fine.