[TI-B] Quadratic Equation Resolving Formula

Ricky

[TI-B] Quadratic Equation Resolving Formula

« on: November 16, 2006, 10:47:14 pm »

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My teacher said before we buy the graphic calculators that there could be installed programs, and she gave an example: a program which uses the Quadratic Equation Resolving Formula... And yesterday I started to learn how to program in my TI-84, this morning while eating Cheerios I made it.
Feel free to use and edit it. I did this just for fun (and maybe show-off in school *cough*cough*)
It is in TI-Basic language and it is compatible with Ti-83, Ti-84 (Plus and SE), but I'm sure it works on more Ti models.

Version 1.0

Code: [Select]

ClrHome
Prompt A
Prompt B
Prompt C
Disp ((-B+√(B^2-4AC))/2A)
Disp ((-B-√(B^2-4AC))/2A)

Example:
A=?1
B=?-5
C=?4
4
1
Done

Version 1.1

Code: [Select]

ClrHome
Prompt A
Prompt B
Prompt C
If A^2+B+C=0
Then
Disp ((-B+√(B^2-4AC))/2A)
Disp ((-B-√(B^2-4AC))/2A)
Else
Disp "IMPOSSIBLE
End

« Last Edit: November 22, 2006, 09:15:58 pm by Ricky »

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Goodnight Once and future Captain	Re: [TI-B] Quadratic Equation Resolving Formula « Reply #1 on: November 16, 2006, 11:13:56 pm »
With a Capital G Reputation: +1/-0 Offline Gender: Posts: 706	Ahh, I haven't used those calculators in years... Do you know if there is any way to loop back to the prompts if a=0 or 4ac>b^2? Logged
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cpprograms Banned	Re: [TI-B] Quadratic Equation Resolving Formula « Reply #2 on: November 16, 2006, 11:51:28 pm »
Reputation: +0/-0 Offline Posts: 429	I can answer that Add Code: [Select] `Lbl AT` before the rest of the program, then at the end do Code: [Select] `If a==0 Goto AT` I love TI basic... If you need a tutorial, I strongly suggest http://odin.prohosting.com/mjs2k/tutorials/83b/part1.htm mjs2000's tutorial. Sadly he's discontinued his site but that tutorial lives on. It's incredibly good. Have fun with TI-Basic Logged

Ricky	Re: [TI-B] Quadratic Equation Resolving Formula « Reply #3 on: November 17, 2006, 03:02:50 pm »
Reputation: +0/-0 Offline Gender: Posts: 2690	Wow... Thanks for the tutorial The one I'm currently using doesn't go as far as that one Logged

zero koll	Re: [TI-B] Quadratic Equation Resolving Formula « Reply #4 on: November 22, 2006, 07:20:27 pm »
Am i here or am i not?... Reputation: +0/-0 Offline Gender: Posts: 238	oh.......i am learning how to program on a commodore 64 its fun!! =) its my dads.....i used it cuz my comp is dead.... Logged
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Ricky

Re: [TI-B] Quadratic Equation Resolving Formula

« Reply #5 on: November 22, 2006, 09:20:00 pm »

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Quote from: zero koll on November 22, 2006, 07:20:27 pm

oh.......i am learning how to program on a commodore 64 its fun!! =)
its my dads.....i used it cuz my comp is dead....

Until now I've thought of Commodore 64 as a console system (since I didn't know about it), but after some research I came to know what C64 really is >_>
It must rule to program in front of the television xD
By the way, I've updated the program during today's class, it now says in case the condition A^2+B+C=0 is false, and tells if it is impossible

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Atrius	Re: [TI-B] Quadratic Equation Resolving Formula « Reply #6 on: November 22, 2006, 09:26:53 pm »
Fear my Blades Reputation: +3/-0 Offline Gender: Posts: 562	Ah, I programmed on my TI-83+ when I got it.. I got quite good at it, I even made a small RPG style fighting game for it. Logged
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Ricky	Re: [TI-B] Quadratic Equation Resolving Formula « Reply #7 on: November 22, 2006, 09:30:22 pm »
Reputation: +0/-0 Offline Gender: Posts: 2690	Quote from: Atrius on November 22, 2006, 09:26:53 pm Ah, I programmed on my TI-83+ when I got it.. I got quite good at it, I even made a small RPG style fighting game for it. Who knows? Maybe it's the one I got totally addicted to, until I got lvl 50. It wasn't...hmm... Adventure of Dot RPG (Aodot), wasn't it? xD Logged

Atrius	Re: [TI-B] Quadratic Equation Resolving Formula « Reply #8 on: November 22, 2006, 09:40:06 pm »
Fear my Blades Reputation: +3/-0 Offline Gender: Posts: 562	Nah, I never realeased it. I did release a tic-tac-toe game though, it had a decent selection of difficulty levels, including impossible which I'm pretty sure by the laws of tic-tac-toe you could only ever get as good as a tie with it. Logged
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mit	Re: [TI-B] Quadratic Equation Resolving Formula « Reply #9 on: November 26, 2006, 12:20:29 am »
QBASIC programmer since age 4. Take that, world. Reputation: +0/-0 Offline Posts: 1079	Mm, I made a version of this program a while back, it was very useful indeed. And Atrius, that's nothing. I made a guess-the-number game, so there. I set the maximum number to 99999999, and gave it to my friend who took ages to get it. Pure brilliance. Tic-tac-toe is probably a tad harder to make than guess-the-number... Logged
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Falcon	Re: [TI-B] Quadratic Equation Resolving Formula « Reply #10 on: November 26, 2006, 12:24:52 am »
Reputation: +0/-0 Offline Gender: Posts: 123	It's hard typing in all those on a graphing calculator. I actually made my own quadratic program last Tuesday, wasn't that hard. Maybe I'll add something like the discriminant, and add the if(a=0) part. I also remember making a loading program where it simulates loading. The only problem I had with it was that the boxes were uneven, but it does work. Logged
Reputation: +0/-0 Offline Gender: Posts: 123

DanTheMan	Re: [TI-B] Quadratic Equation Resolving Formula « Reply #11 on: December 10, 2006, 09:22:17 pm »
w00t Reputation: +0/-0 Offline Gender: Posts: 1983	Here's one I've made for the same purpose: Code: [Select] `Lbl ST ClrHome a+bi fix 3 Prompt A,B,C If A != 0 Then ((-B+SQROOT(B^2-4AC))/(2A)) -> Q ((-B-SQROOT(B^2-4AC))/(2A)) -> R Disp Q>Frac, R>Frac Real Float Else If A=0 Then Disp "TRY AGAIN" Pause Goto ST` It's longer, but more functional. This one will calculate imaginary values as well, displaying all results in fraction form if possible, otherwise rounding to 3 decimal places. Explanation of symbols I used: a+bi and Real can be found in the Mode menu, as can Fix 3 and Float. != means "not equal to" and can be found in the Test menu (2nd Math). -> means "store as" and is the button right above the "On" key. SQROOT is obviously the square root symbol, while ^2 is "squared" The placement of parenthesis is critical, as I want the entire calculation to be done before storing the result as a variable, so make sure you use the right number of parenthesis at the right place. EDIT: Crap, 2 weeks since the last post. Didn't realize that I was gravedigging here. It was only the fourth topic down, so I didn't bother to check the time of the last post. Sorry about that =/ « Last Edit: December 10, 2006, 09:28:27 pm by dantheman » Logged
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