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

Fellow Programmers,
I am currently developing a trigonometry kit that will be eventually be available to all platforms. However, I need your input on what kind of Trigonometric help you need. The public is the artists' greatest critic and teacher. And right now, I need your help. Tell me what your heart desires. Email me at scorpo128a@hotmail.com

Try putting something that will show formulas and something that will solve for the unknown in those formulas and soemthing that will graph the functions and show us how they relate to other functions.

Got a great idea for a partial trig package, I once saw in college. A fellow student designed the greatest program in TI-BASIC, and shared the program with me, but due to an accidental delete, I lost the program with no backup.

The program on initial run showed an equilateral triangle on screen, with A,B & C angles shown, as well as sides a,b & c. all were marked up on the screen. In the lower menu, he only labeled the buttons A,B,C,a,b, & c. You answered for two of the values (i.e.: A & a) and the function you wanted answered (sin, cos, tan, sec, cos, csc...) and it would return the value. If you couldn't solve for the values given, it would return you to the home screen prompting for more data. It was interactive, the angles on the screen image changed, everything! It was as friendly, if not more so, than a MS Windows graphics package. Size was about 5k...Now to find it again, that would be a winner!

Law of Sines, Law of Cosines, Law of Tangents, Input value and display value through trig functions, graphing trig functions, trigonometric identities and formulas, triangle solver, right triangle solver etc...

Try to optimise the trigo circle from prgm 'precalc' and include the domain and image of every possible trig funct. like arcsin arcos cot sec ...

Could someone create a program that converts from standard form (ax+by=c) to slope intercept from (y=ax+b). Email it to me at easton_01@msn.com once you are done or you could output it onto the site. Good luck!

Easton

Yes, I do think that I could make this program, it might take a lot of space on your calculator, that's a price you'll have to take for this kind of program. I don't think it will be that hard, though I might have to look over that stuff again to remember it all. So, if you have any ideas of what you want it to do, be free to email me. WackyYKurt88@comcast.net

I made a program that does this, but its not the main feature, so you have to get a huge program.

It doesn't take a lot of space.

yes it is really easy. and no, it doesnt take much memory. What calculator do you have? If it is 86 i allready have a program on ticalc.org that does that. If it is some other calc, it would be really easy to convert it to a different calc. Email me if you need help.

ax+by=c to dx+e=y, then d = -a/b, and e = c/b
in a basic prgm than would be:

Disp "AX+BY=C"
Prompt A,B,C
Disp "TO: Y=DX+E"
Disp "D=", 0-A/B
Disp "E=", C/B

Hope this helps you

Thanks

Muff

To optimize that program put all Disp commands on one line separated by commas, but don't include Disp for each, you only need it once. also, you can delete the " at the end of the first line. and change 0-A/B to simply -A/B (negative sign)

How do you do it in reverse?

If you change the disp to output, then you could put them on one line with the corrosponding letters.

My QuadForm math Os has a way to do that, anyway, in versions 3 and up...

Yes, I have already made a BASIC program for the TI-89 that takes these inputs: any equation of a line, 2 points on a line, or 1 point and the slope. It returns the equation of the line in standard form, point-slope form, and slope-intercept form. It also gives the Y-intercept, the X-intercept, the Slope, and will graph the line. I also built in options to find the inverse of the equations, and change the coordinates for point-slope form. I'm planning to upload it in the next few days.

Or you could just use the "solve(" function if you are going to use such a high-level calculator as the TI-89.

I do have a program i wrote about a year ago that converts from ax+by=c to Y=mx+b form it does not take that much ram at all. For more info email me at johnnyd05@hotmail.com

I've made a program just like that. It will take any 4 of the linear equations formulas and it will solve for everything that can be found from the known variables.

no offense, but isn't it faster to just to it by hand? taking the time to hit prgm, scroll down, hit it, and type in the formula seems harder than just moving the bx over and dividing by a thus giving you
y=-bx/a+c/a