Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - Kyle Kelly

Pages: [1]
1
TI Calculators / Re: How does "Convert Expression" feature work on the nspire CX CAS?
« on: October 01, 2019, 11:10:20 am »
Quote from: Xeda112358 on October 01, 2019, 11:00:13 am
I think you want a solve( command. I don't have my nspire on me and won't for a while so I can't tell you how to use solve( on the nspire, but good luck!

Solve just gives me the solution, but it doesn't actually show the expression in the converted form which is what I need.

2
TI Calculators / How does "Convert Expression" feature work on the nspire CX CAS?
« on: October 01, 2019, 10:46:38 am »
I'm working with logarithms and I need to be able to convert them to different forms (exponential, natural log, etc) but every time I try to convert an expression I just get the answer "true" and it doesn't actually convert the expression.

for example, determine the equivalent exponential equation of this logarithmic equation:

log6 1296 = 4 which should be 64 = 1296

another example, write the following equation in exponential​ form: log9 x = 2 which should be 92 = x

Surely there's a way for the calculator to do this and I'm positive this is the feature that would do it but I don't understand how it works, could someone possibly explain whats going on?

3
TI Calculators / Re: Properties of logarithms on the TI nspire
« on: April 10, 2019, 10:48:35 am »
Quote from: Xeda112358 on April 10, 2019, 10:33:22 am
I think the nspire can collapse multiple logs into one (normal behavior), but extracting you'd have to program it yourself. If it is just integer inputs, you can use one of the nspire's factor() commands to factor the number and then manually construct a sum of logs.

Okay to combine multiple logs into one how would i do it?

For example: 5 log base 3(y) - log base 3(x-4)

https://imgur.com/a/Cxvkuax picture for reference and the solution i'm trying to get

4
TI Calculators / Properties of logarithms on the TI nspire
« on: April 10, 2019, 06:10:36 am »
Is it possible to make the TI-nspire apply properties of logarithms in order to rewrite multiple logs as one (the sum) or rewriting one log as multiple logs (the difference)?

I would assume the CAS version would be able to do this but I can't for the life of me figure out how. Is the feature built in the calculator or would you have to program it?

5
TI Calculators / Re: Getting full access to TiNspire Apps
« on: March 26, 2019, 06:15:53 pm »
Quote from: Xeda112358 on March 26, 2019, 08:52:34 am
There are legal issues involved with reverse engineering, especially if it risks "taking away someone's livelihood."

If they need an ID then that means they probably compile a special version that can only be run on that calc (or calcs with those matching digits). That way people can't just post the binary files and everyone have access ;) It is highly unlikely that their trial versions are full as it would be complicated to allow up to 100000000 different codes to "unlock" it.

In that case, it might actually be a simple way to crack the security, but you would have to buy a copy first.

Finally, please don't double-post like that. You can just edit your post to add more :P

Yeah I guess the entire ordeal isn't really worth the time (probably not even possible). Guess I'll just have to learn the material the old fashioned way.

6
TI Calculators / Re: Getting full access to TiNspire Apps
« on: March 26, 2019, 05:57:17 am »
Quote from: Xeda112358 on March 25, 2019, 04:06:26 pm
Sorry, I don't have my nspire on me, but those just look like partial files. What makes you think they are the same as the full version (without the key) ? I would think they'd offer just a simple trial version and give you the full download (if it even exists) after you pay.

Personally, I don't think it's worth even the time to disassemble or crack based on this thread.


I'm not sure if the trial is the same document as the full version but according to their website when you purchase an app you have to send them the last 8 digits of your 27-digit TI-Nspire's Product ID which I'm assuming they put in a list or something with other registered calcs (other people who have purchased the app) and the app then checks that against that list and allows you to access the full features. That's just my guess on how it works but not really sure. 

I saw that thread on reddit you linked but it doesn't really say anything about getting the programs for free, more just people commenting whether or not the calculator itself is worth it or not (usable in the classroom).

At the end of the day aren't TNS files just LUA code, I'm sure it could be decompiled on a pc and be further analyzed no?

Quote from: Eeems on March 25, 2019, 04:11:43 pm
Not to mention we don't crack software on this forum.

Really? Unfortunate because this forum seems to be the only healthy community that actively discusses calculators and has knowledgeable people.

EDIT:
(Zeda) merged double-post.

7
TI Calculators / Re: Getting full access to TiNspire Apps
« on: March 25, 2019, 03:09:35 pm »
Quote from: Xeda112358 on March 25, 2019, 02:15:17 pm
I don't know without personally inspecting it. I'm just assuming they are using TI's encryption, which does use RSA. I could be wrong; maybe they are using their own encryption.

Do you mind taking a look at them? Here are the trial apps they let you download https://www.tinspireapps.com/trials/

As you can see the paid options are there, but I'm wondering if there's a minor modification you can maybe make in order to access those restricted features?

8
TI Calculators / Re: Getting full access to TiNspire Apps
« on: March 25, 2019, 01:55:41 pm »
Quote from: Xeda112358 on March 25, 2019, 01:41:43 pm
I'll be honest, paid calc software just seems like a scam to me (not technically, but with tens of thousands of programs for free on ticalc.org...). If that's the only place to get it then you'll just have to make your own versions until somebody can crack the (probably) RSA encryption. At current state-of-the-art, that'll take a trillion-ish years.

How can you determine if it's RSA encrypted or something more trivial to crack?

9
TI Calculators / Getting full access to TiNspire Apps
« on: March 25, 2019, 01:10:31 pm »
Does anyone know how to get access to the full version of the apps offered on https://www.tinspireapps.com/ without having to pay the ridiculous price of $50 for each app?

They offer trial versions of each app which I believe is the same tns document as the full version except it there is no key with it. Does anyone have any ideas on how to bypass this if its possible?

10
TI Calculators / Re: Is it possible to convert a TNS document back to its LUA form?
« on: March 15, 2017, 07:10:53 pm »
Yes, I want to edit the LUA document. TNS documents are made from LUA right? I want to get the LUA form of the TNS document so I can make changes to the program.

11
TI Calculators / Re: Is it possible to convert a TNS document back to its LUA form?
« on: March 15, 2017, 06:31:41 pm »
Hi @SpiroH , thanks for your response, I took a look at your post but I am a bit confused. Could you explain how to use the  TNS2XML program for what I'm trying to do?

12
TI Calculators / Is it possible to convert a TNS document back to its LUA form?
« on: March 15, 2017, 04:52:47 pm »
Like the title says, I have a few TNS documents that I'd like to modify via LUA but they aren't readable in the TNS format.

Pages: [1]