Omnimaga

Calculator Community => TI Calculators => General Calculator Help => Topic started by: perennial on August 01, 2011, 01:36:14 am

Title: Integral programs for Nspire?
Post by: perennial on August 01, 2011, 01:36:14 am
I want to ask why is it no one has ever write a program showing step by step integrals on the Nspire calculators?
So the nspires will never have that type of program even though it can with all the buff up hardware more than adequate. Would be cool if there was such a program. I guess whoever write a program of that magnitude for the Nspires and it works then they automatically win the tournament aren't they?
Also, is Matlab better than Mathematica or they about equal?
So, there's no way to write a program cover from Cal 1&2 for the Nspires?
Then why is it Matlab so much more expensive than Mathematica? It can goes up to more than $32,000!!!!
Title: Re: Integral programs for Nspire
Post by: AngelFish on August 01, 2011, 01:39:15 am
Because symbolic Integration is an incredibly difficult task (if you want to get technical, it's an undecidable problem to integrate an arbitrary function). The step-by-step integration available through packages like Mathematica is the result of a ton of code implementing very advanced algorithms and using a lot of processing power.
Title: Re: Integral programs for Nspire?
Post by: AngelFish on August 01, 2011, 01:47:06 am
Well, someone *could* write such a program for the nSpire, but it'd only work for certain integrals.
Title: Re: Integral programs for Nspire?
Post by: AngelFish on August 01, 2011, 01:49:43 am
Mathematica is, overall, much better than Matlab. However, you need to get into some pretty nasty problems (Or integer math  <_<) before the difference in abilities and performance becomes noticeable. You'll also pay a pretty nice sum to buy Mathematica.
Title: Re: Integral programs for Nspire?
Post by: perennial on August 01, 2011, 02:14:16 am
why not tried to treat functions as a derivative and reverse the process in terms of integral. Could that work?
Title: Re: Integral programs for Nspire?
Post by: AngelFish on August 01, 2011, 02:14:37 am
Nope, that actually makes it harder/impossible in a lot of cases.
Title: Re: Integral programs for Nspire?
Post by: DJ Omnimaga on August 01, 2011, 02:16:18 am
How come are those softwares so expensive?? O.O
Title: Re: Integral programs for Nspire?
Post by: AngelFish on August 01, 2011, 02:19:34 am
Because they take a ton of work to write and the organizations that typically purchase those products don't notice a few thousand dollars a single computer license.
Title: Re: Integral programs for Nspire?
Post by: perennial on August 01, 2011, 02:22:18 am
They basically have a lot of features. Especially the Matlab has a lot of object oriented that are so advanced that you can basically do anything you want with it. You can program anything you want. It contains basically all the  including C, C++, Java, and Fortran(Wiki). You can program for a spectrometer, physics. Anything you want. It is really flexible even its compiler.
The last time I checked out the matlab DVD and tried out. It is a 3.75GB program that I installed took 20 minutes. Very bad on my part not to know how to program. I just followed that tutorial on the Matlab websit and still know nothing. It's pretty nice interface.
If someone were to write integral step by step for transcendental functions only then I think people are satisfied since transcendental functions for integration is harder than the rest.
Also, would you say 10 MB of that program in C language using NDless be enough?
Done.
Title: Re: Integral programs for Nspire?
Post by: AngelFish on August 01, 2011, 02:43:35 am
Would you mind not double/triple posting within 6 hours of your last post on a thread? If you need to add more, just use the Modify button in the upper right corner of your post.

As for integration of transcendentals, that's still a difficult task (although slightly easier than arbitrary functions).
Title: Re: Integral programs for Nspire?
Post by: Adriweb on August 01, 2011, 01:49:05 pm
WolframAlpha makes step-by-step (you can make it show the steps, but it's not by default) derivatives, integrals, partial fractions etc.

(and it's free of course)
Title: Re: Integral programs for Nspire?
Post by: AngelFish on August 01, 2011, 01:50:07 pm
Yeah, Wolfram-Alpha is a partial online version of Mathematica 8.
Title: Re: Integral programs for Nspire?
Post by: Munchor on August 01, 2011, 03:01:47 pm
Because symbolic Integration is an incredibly difficult task (if you want to get technical, it's an undecidable problem to integrate an arbitrary function). The step-by-step integration available through packages like Mathematica is the result of a ton of code implementing very advanced algorithms and using a lot of processing power.

Well, someone *could* write such a program for the nSpire, but it'd only work for certain integrals.

Mathematica is, overall, much better than Matlab. However, you need to get into some pretty nasty problems (Or integer math  <_<) before the difference in abilities and performance becomes noticeable. You'll also pay a pretty nice sum to buy Mathematica.

Is this triple post or did someone delete posts here? O.O
Title: Re: Integral programs for Nspire?
Post by: AngelFish on August 01, 2011, 03:13:40 pm
Actually he had triple posts in between my apparent triple posts :P

No worries. Editing does that.
Title: Re: Integral programs for Nspire?
Post by: perennial on August 01, 2011, 05:25:20 pm
i didn't delete my post i recombine them like qwerty5.5 wanted. what else do u want?
Title: Re: Integral programs for Nspire?
Post by: DJ Omnimaga on August 01, 2011, 05:44:52 pm
Don't worry about it. But yeah those softwares migth be a huge ton of work to write so it might take a long while before someone creates one, and since Omnimaga is mainly oriented towards game development, there are probably not a lot of people here who would take on such task.
Title: Re: Integral programs for Nspire?
Post by: northern_snow on August 02, 2011, 03:35:54 am
There is a nice app on ti-89 titanium "Made Easy" can do these:
•   Solve Step by Step Separable D.E.
•   Solve Step by Step Exact D.E.
•   Solve Step by Step Linear in x D.E. with Integrating Factor
•   Solve Step by Step Linear in y D.E. with Integrating Factor
But it's QUITE EXPENSIVE!!!
(any cracks?)
http://education.ti.com/educationportal/sites/US/productDetail/us_diff_eq_made_easy_89.html
Title: Re: Integral programs for Nspire?
Post by: fb39ca4 on August 15, 2011, 01:51:20 am
They still sell apps? And for $150, O.O
Title: Re: Integral programs for Nspire?
Post by: TIfanx1999 on August 17, 2011, 08:13:07 am
There is a nice app on ti-89 titanium "Made Easy" can do these:
•   Solve Step by Step Separable D.E.
•   Solve Step by Step Exact D.E.
•   Solve Step by Step Linear in x D.E. with Integrating Factor
•   Solve Step by Step Linear in y D.E. with Integrating Factor
But it's QUITE EXPENSIVE!!!
(any cracks?)
http://education.ti.com/educationportal/sites/US/productDetail/us_diff_eq_made_easy_89.html
I doubt it, but discussing cracks of software is against the rules here anyway. :)