Omnimaga
General Discussion => Other Discussions => Math and Science => Topic started by: TheCoder1998 on March 01, 2014, 09:51:21 am
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hey guys,
the symbolic app has a feature to calculate derivatives (the d( function)
could a function like this also be programmed for indefinite integrals?
i've been searching for a function like this for almost a week now and it's driving me crazy :mad:
any help would be appreciated :thumbsup:
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No, unfortunately this is almost impossible except for basic integrals of polynomials like x^2. Mathematica solves indefinite integrals using the Risch algorithm, which is quite difficult to implement.
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ZoomMath 500. Be prepared to shed out 100 dollars though.
I bet they have only sold a few copies.
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There isn't a free one out there as far as I know, feel free to make one :)
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ZoomMath 500. Be prepared to shed out 100 dollars though.
I bet they have only sold a few copies.
It depends. Since it's math-related and maths are 99% of TI calc userbase, it might be selling more than we think, although there's the issue about overly paranoid parents when it comes to online transaction security, and most students are under 18 so no credit card nor Paypal account. Also wasn't there a version of ZoomMath that costed $500?
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ugh, i'm not buying zoommath, i just hate the fact that they charge money for it :mad:
i'd rather spend my summer vacation trying to program one myself (even if it's impossible)
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ugh, i'm not buying zoommath, i just hate the fact that they charge money for it :mad:
i'd rather spend my summer vacation trying to program one myself (even if it's impossible)
Well, at any rate if Zoommath does it, it shows itself to be at least partially possible.
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i was wondering, does anyone here actually own zoommath?
is it illegal to (partially) share the code?
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i was wondering, does anyone here actually own zoommath?
is it illegal to (partially) share the code?
ZoomMath is free to download so you could look through the code yourself. What you buy is a key to unlock all of the features.
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ZoomMath would not be at all impossible to rewrite. Take Symbolic and work from there to make a full-fledged CAS. In the end it would probably have more features.
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ZoomMath is free to download so you could look through the code yourself. What you buy is a key to unlock all of the features.
really?
does anyone know how i could decompile an app and look through the code?
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The main concern would be speed. You can't afford to spend 5 minutes waiting on a result from your calculator.
Decompiling an app is simple. The are online disassemblers, you can find em under 'tools' on the frontpage. You'll have to figure out which code does what, though, because comments aren't compiled ;)
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so, it's been a while now, and i've decided that i still want to calculate my indefinite integrals
so how do i decompile zoommath?
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bump,
anyone?
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For the most part, decompiling an app and determining the structure of and purposes and functions of the code is simple. In fact, I used to do this without actually decompiling (although it was slower) and just reading bytecode.
According to aeTIos, there is a tool at Omni for it...
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Use Wabbitemu and install the app to the emulated calc and then (somewhere but I forgot where) there is the ability to go to the beginning of where the app is stored in memory. If it is not enabled by default there is an option to "decompile" the source from byte-codes into asm. There won't be any comments of course but it is a start. I have already wasted at lot of time with the app though trying to make the app think that I have bought the full version. I actually got I to think I did too but it seems that they multiple protections in the code because the app would hang whenever I tried to do any calculus functions but would be fine with anything else. :banghead: Anyway... unless you're good at asm it is probably a waste of your time (it is almost embarrassing how much time I had wasted.)
I would have no problem paying about $30 for the app but for $100 I could get a used cx cas to do the work for me.... I bet they would actually make more money to if it were less.
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hmm, thanks for the info, i'll try that
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There is probably a smartphone app that can calculate indefinite integrals for $2-5. It's insane this company dares to charge $100 for a calculator application. I pay less for a windows 7 licence >.<
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I didn't pay for my W7 license as Harold gave it to me. :P
Also there is Xcas on Android and an Omni member ported Maxima. So you definitely have this on smart phones. ;)
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the 100$ price tag is ridiculous :mad:
i'd rather buy myself a new smartphone (which will probably die in half an hour considering my luck with mobile phones :P)
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LOL buy a Nexus 5 they're not too expensive and totally awesome. ;)
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The only issue, though, is if the smartphone is banned at tests (especially if it has wi-fi or 3G capabilities, which can be used to cheat). Still, charging this much for a calculator app is ridiculous, especially considering its main target audience is students, who rarely have close to this much money.