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

There is no Laplace Transform function on my TI-92. Integrating e^(-s*t)f(t) from 0 to infinity results in an incorrect result (even when the Laplace Transform exists). It would be useful to have a function to do the transform rather than preform serveral actions to get the result.

I found the Laplace Transform program, by Paolo Silingardi, in the file archives. It works great!!!

hey dude i saw ur coment on this site about calculator program. i need the laplace transform program for the TI-89 cal which will give all of the working out is well. i need this for one of my exams and i am not good at solving this equations manually. so please reply to this e-mail(tharsikan_s@hotmail.com) and help me out.

thank you.

hey jeff and i are tring to create a program that changes base ten numbers to any base numbers. If you have an idea or the slution please e-mail me the idea, or solution, at wild_man_07_@hotmail.com not the address above.

Would that be using the log function, and if so, I can give you the source code for mine.

sup. i need a laplace transform program from my ti 89 cla which would give out the full working out. if u have this please reply to me on (tharsikan_s@hotmail.com)

I wrote a program that converts any base numbers (the base has to be less that 10) to another base (also less than ten) Could this help? my e-mail is brainycooldude2002@yahoo.com

Hello there!
Does your program converts numbers of various lengths (ex: number with 100 digits), and do it in seconds?

Hmmm. If it's 83-84 it probably wont do it in A second, maybe 4 or 5. It's to be expected.

To convert to convert from base 'a' to base 'b' you need to count how many you have (we count in base 10). Then count to b until you have none left. When you reach b, inc the next column over. The program shouldn't be too difficult to write. I'll try to create a formula to help.

thx i'll try it

I have on mind such program that maybe could help you in the base convertions...Only have to tell me what calc you have...

i have a ti-83 + se

I have made a super-effective base conversion program that can convert from any base 1-64 to any base 1-64, and even allows INPUT of characters implying negative values (^-1, ^2, ^3). It uses #'s 0-9, Capital, lowercase, theta, and pi, respectively. You can add your own simply by adding the characters to the string that appears at the beginning of the program.
E-mail me at SSpyro64@AOL.com if you're interested.

I MEANT bases 2-64.

Don't e-mail, I can't keep sending it to 20 people. I posted it at TI-calc.org (see URL).

I just made a program that can convert from any base (2-64) to another base (2-64). You can find it in the TI-83 Plus/BASIC/MATH folder and it is called Base 2 to 64, and the file is BASETO64.zip.

Can anyone make a program for TI-83 plus that can do integration? I know that symbolic does derivatives, but it would be nice to have integration too.

The TI-83 can only use the Trapezoid, Simpson's, or Midpoint Formulae to compute the definite integral of a function. There is no CAS on the 83, so indefinite integration is not possible.

The url is in the URL field provided.

Hope it helps.

It's not impossible; the CAS had to come from somewhere. A symbolic integrator could be built, but it would take a lot of time and effort, and end up performing slowly.

to do implicit or explicit integration? if you want to do explicit integration, go to your "fnint(" in your Catalog. if you wanted to integrate the eqn y=x^2 using the "x" variable from 1 to 3, you would type in: fnint(x^2,x,1,3) = then it would give you your answer.

if you're talking implicit integration (i.e. x^2 would give you (x^3)/3 + C that's a different story....