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shendogg42

Newbie

Joined: 26 May 2012
Posts: 3

Posted: 23 Jun 2012 01:26:56 pm    Post subject:

rfdave wrote:
shendogg42 wrote:
 comicIDIOT wrote: Welcome, Shen! Would you mind sharing your improvements on that quadratic formula with us? Lastly, avoid posting in succession within 24 hours. After which, it's perfectly fine to double post

Well, I started relearning TI Basic from scratch for the purposes of this program, so it started simple, just giving decimal approximations and telling whether the solutions were rational/irrational and real/complex. (I never have figured out how to accurately tell if the answers are rational or not given irrational coefficients. Any ideas?) Then I wrote an unrelated program to reduce numbers under a square root, and I realized I could combine the two to get exact quadratic solutions.

Shendogg42-You might be interested in this paper by Dr. Middlebrook about better expressions for the quadratic equation

Dave

Wow! This has given me a lot to think about...
I took calculus in high school, but I'm just this fall starting to take it again in college. I'm still in sort of a lower math mentality and alternate forms of the quadratic equations hadn't occured to me, and while minimizing the radical was one of my main goals, getting rid of it as a goal hadn't occurred to me. This paper also speaks to the issue of accuracy and rounding errors, which is a big part of my problem with trying to get the calcutor to determine rationality.
I'll probably have to read over this several times to really understand it, and the electrical engineering stuff is completely out of my league. But thank you, this helps me a lot!
insrisg

Newbie

Joined: 14 Jun 2012
Posts: 7
Location: University at Buffalo

michiel

Newbie

Joined: 07 Mar 2012
Posts: 1
Location: Netherlands

 Posted: 26 Jun 2012 12:49:17 pm    Post subject: Introducing myself, Michiel Drost. Hello all, My name is Michiel Drost, I'm 24 years old. Ive been a member for a while, but primarily because of SourceCoder 2.5. I've been a C/C++ coder (so I'm also familiar with java(script) Flash AS2 and 3, etc.) So I purchased an TI-84+ and appearantly I can program stuff on it. Awesome! At the moment I teach mathematics in secondary school in various degrees. At times, my student ask me about digital logic (because they play Minecraft) and we would make an appointment after school so I can hook them up with the basics. They seem to like it, and now they've been asking about boolean algebra. Anyhow, geetings from the Netherlands. See ya around.
KermMartian

Joined: 14 Mar 2005
Posts: 55736
Location: Earth, Sol, Milky Way

 Posted: 26 Jun 2012 03:50:48 pm    Post subject: Michiel, welcome to Cemetech! Interesting where life takes you; even though I'm a year older than you, I'm still working on my PhD while you're out their training young minds in the arts of math, for which I commend you. You can indeed program your TI-84+, and although I hate sounding like I'm constantly promoting my own work, I think I've put together a great intro-to-programming / intro-to-calculator-programming book, heading to the printer in a few weeks: http://cemete.ch/book . It teaches general programming concepts like Boolean algebra, program flow and design, user interfaces, and all that good stuff via calculator programming, which is how I and most of my compadres on Cemetech learned such things. Greetings from the Netherlands indeed, and if you ever do any recreational Minecraft, we have a creative server of our own and a PvP/survival server elsewhere that we frequent._________________
HansVolkerstein

Newbie

Joined: 27 Jun 2012
Posts: 8
Location: In Siwa Oasis

 Posted: 27 Jun 2012 09:36:09 pm    Post subject: Hello, I am Hans. I like Wolfenstein. Aside from that, I own a TI-84+ and a TI-89 Titanium. I learned to program BASIC for both. I'm in progress of learning C# and Python.
KermMartian

Joined: 14 Mar 2005
Posts: 55736
Location: Earth, Sol, Milky Way

Posted: 27 Jun 2012 10:01:51 pm    Post subject:

 HansVolkerstein wrote: Hello, I am Hans. I like Wolfenstein. Aside from that, I own a TI-84+ and a TI-89 Titanium. I learned to program BASIC for both. I'm in progress of learning C# and Python.
Welcome to Cemetech, Hans! How extensively have you explored TI-BASIC on the TI-84+ and the TI-89ti? Any cool projects to share with us, or things that you would like to learn? What prompted your pursuit of C# and Python?
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HansVolkerstein

Newbie

Joined: 27 Jun 2012
Posts: 8
Location: In Siwa Oasis

Posted: 27 Jun 2012 10:04:24 pm    Post subject:

KermMartian wrote:
 HansVolkerstein wrote: Hello, I am Hans. I like Wolfenstein. Aside from that, I own a TI-84+ and a TI-89 Titanium. I learned to program BASIC for both. I'm in progress of learning C# and Python.
Welcome to Cemetech, Hans! How extensively have you explored TI-BASIC on the TI-84+ and the TI-89ti? Any cool projects to share with us, or things that you would like to learn? What prompted your pursuit of C# and Python?

For z80, almost everything. On 68k I usually create math programs that arent much involved. I decided to enter the world of PC programming and one of my friends told me C# and Python was a good place to start.
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Level 5 Field-Ops ready to fire-for-effect.
AC MILAN
KermMartian

Joined: 14 Mar 2005
Posts: 55736
Location: Earth, Sol, Milky Way

 Posted: 29 Jun 2012 10:02:35 am    Post subject: Then your friend is correct, and perhaps you should bring him here as well. Would you care to share some of your TI-BASIC projects with us, particularly the z80 ones? We have a Your Projects subforum for incomplete and completed projects, and the file Archives for completed programs that people can download._________________
vebveb

Newbie

Joined: 02 Jul 2012
Posts: 24

 Posted: 03 Jul 2012 09:06:40 am    Post subject: Hello, As some know, I programmed LuaFX on algebra FX 2 and on the calculators of the fx9860 series. I own a algebra FX 2, I began with basic then MLC and C. I first programmed LuaFX on algebra FX 2 with the goal to have something faster than MLC and with much more capabilities (float numbers, fast scrolling, ...). I optimized my interpretor in many ways (it was first slower than MLC and now it is much more faster). Then I did a similar interpretor for the fx9860 family with the goal to have a fully compatible interpretor between the two families.
FinaleTI

Newbie

Joined: 10 Jul 2012
Posts: 14

 Posted: 10 Jul 2012 09:04:58 pm    Post subject: Hi all, I'm FinaleTI. I figured it was time I registered here, since I lurk here pretty often. Some of you might recognize me from Omnimaga, but in case you're unfamiliar with me, I'm an Axe programmer, as well as a BASIC/Hybrid BASIC programmer. I have a few projects currently, though my main focus is currently my Axe RPG, Nostalgia, which is a homage to classic calculator RPGs, featuring two seperate dimensions, one where all the graphics are ASCII, in tribute to BASIC RPGs, and in the other, 8x8 monochrome tiles are used in tribute to ASM RPGs. I'm also a Minecrafter, currently a member of the new Arcadia. In Minecraftia, I'm known as DMuckerman.
KermMartian

Joined: 14 Mar 2005
Posts: 55736
Location: Earth, Sol, Milky Way

 Posted: 11 Jul 2012 11:08:43 am    Post subject: vebveb: Can't wait to talk to you more about Lua and Lua on Casio calculators! I think you'll be a great resource for if/when some of us work on porting Lua to the Prizm. FinaleTI: It's great to finally see you around here. As you probably know, we also have the SAX chat widget on the side linked to the #cemetech IRC channel on Efnet. Do you have any cool programs underway or recently completed? If so, you should post Your Projects topic(s) about said programs and games. And it's of course great to have you on Evo/Yogiverse as an Arcadian!_________________
FinaleTI

Newbie

Joined: 10 Jul 2012
Posts: 14

 Posted: 11 Jul 2012 04:58:29 pm    Post subject: Recently completed projects, I have none. Nostalgia is quite the undertaking, so my other projects are on hiatus because of it. My previously completed programs are two viciously difficult tunnel games, Blur and Collision Course. I plan on combining the two into a single app at some point, as well as fixing a few of the problems Blur has. Not to mention Blur is very outdated, last being compiled with Axe 0.4.x. Here are a few screenies of the two: The Collision Course screenie is actually running at 25% speed. It's near impossible to play at 100% speed on Wabbit, though I find it perfectly playable on hardware. I'll see about getting a topic for Nostalgia started here soon.
DJ_O

Retired TI-83+ coder

Joined: 18 Mar 2005
Posts: 1485

Posted: 12 Jul 2012 10:19:28 pm    Post subject:

 FinaleTI wrote: Here are a few screenies of the two:

Tips when making animated screenshots

On another note, welcome here.
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Retired 83+ coder, Omnimaga/TIMGUL founder. Now doing power metal music (formerly did electronica)

KermMartian

Joined: 14 Mar 2005
Posts: 55736
Location: Earth, Sol, Milky Way

Posted: 13 Jul 2012 10:52:13 am    Post subject:

 DJ_O wrote: Tips when making animated screenshots On another note, welcome here.
Or, if you want a slightly less sarcastic version:
http://www.cemetech.net/forum/viewtopic.php?t=6163
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vorsaykal

Newbie

Joined: 16 Jul 2012
Posts: 3

KermMartian

Joined: 14 Mar 2005
Posts: 55736
Location: Earth, Sol, Milky Way

 Posted: 16 Jul 2012 03:12:32 pm    Post subject: As shaun_ and IkariTari said, that's one of the best introduction posts we've seen in a long time. I'm glad that you experience us as friendly and welcoming; we try to make sure that we maintain a high standard of intelligent discussion, but have respectful fun while we do so. I'm also very happy that you've been migrating from Java towards Python; long-time denizens of Cemetech know that I'm constantly praising the latter at the expense of the former language's many shortcomings. I'm working on a PhD in CS myself, having done my undergraduate work and a Masters in electrical engineering, so I think that's a great idea. I think you should probably try to at least slightly narrow down what you're interested in, but for starters, I think some C programming with the Prizm should be great. I look forward to being among the Cemetechians helping you out, and to the nifty projects you'll surely put together. Welcome!_________________
kgmstwo

Newbie

Joined: 27 Jul 2012
Posts: 7
Location: Texas

 Posted: 28 Jul 2012 12:28:25 pm    Post subject: Hi, I'm kgmstwo. I have come here to Cemetech to understand hooks better, especially parserhook. I have a blue 84+SE, which I program in ti basic and assembly. So, what does kgmstwo mean? Its my real life name: Newton!
Stan in Dryden

Newbie

Joined: 29 Jul 2012
Posts: 20
Location: Dryden NY

 Posted: 30 Jul 2012 05:55:40 pm    Post subject: Hi, I'm Stan, and I registered just today. I found this forum through Googling for an error message, "Unknown tag value in program image", that I got from TI Program Editor. I'm amazed how quickly I got an answer that was right on point. I teach statistics at a community college in upstate New York. The college has standardized on the 83/83+/84+ family for courses from college algebra through Calculus I, including statistics. I own a TI-89, and use a TI-84+ belonging to the college. My TI-83 Web page is at http://www.tc3.edu/instruct/sbrown/ti83/, and for general statistics http://www.tc3.edu/instruct/sbrown/stat/ -- I also have some calculus at http://www.tc3.edu/instruct/sbrown/calc/ I'll post under Projects when I get a chance, but most of what I've done has been for my classes -- fourteen statistics utilities, vector arithmetic with plots, Newton's Method for solving equations, that sort of thing. So far I have them only for the 83/83+/84+ family, but I'd like to create 89 family versions one day.
KermMartian

Joined: 14 Mar 2005
Posts: 55736
Location: Earth, Sol, Milky Way

Posted: 30 Jul 2012 09:06:24 pm    Post subject:

 kgmstwo wrote: Hi, I'm kgmstwo. I have come here to Cemetech to understand hooks better, especially parserhook. I have a blue 84+SE, which I program in ti basic and assembly. So, what does kgmstwo mean? Its my real life name: Newton!
Welcome to Cemetech, Newton slash kgmstwo! I'm always very happy to have another assembly (and BASIC) programmer around Cemetech. I look forward to seeing all the nifty programs you'll work on; anything from your past catalog you would care to share with us?

 Stan in Dryden wrote: Hi, I'm Stan, and I registered just today. I found this forum through Googling for an error message, "Unknown tag value in program image", that I got from TI Program Editor. I'm amazed how quickly I got an answer that was right on point.
Welcome, Stan! We pride ourselves on trying to be both speedy and helpful, so I'm glad to hear that.

 Quote: I teach statistics at a community college in upstate New York. The college has standardized on the 83/83+/84+ family for courses from college algebra through Calculus I, including statistics. I own a TI-89, and use a TI-84+ belonging to the college. My TI-83 Web page is at http://www.tc3.edu/instruct/sbrown/ti83/, and for general statistics http://www.tc3.edu/instruct/sbrown/stat/ -- I also have some calculus at http://www.tc3.edu/instruct/sbrown/calc/
Great stuff all around. I'm a denizen of New York City myself, and I have done academic work in Binghamton, which I see you're not far from. This is a discussion for a later date, but perhaps we could work out some sort of cross-linking between Cemetech and your page respectively for people searching for math- and programming-related information.

 Quote: I'll post under Projects when I get a chance, but most of what I've done has been for my classes -- fourteen statistics utilities, vector arithmetic with plots, Newton's Method for solving equations, that sort of thing. So far I have them only for the 83/83+/84+ family, but I'd like to create 89 family versions one day.
Those are still very useful programs, and although there are probably already some versions already around the community, I'd say versions designed by a math professor are likely to cover more corner cases than more amateur incarnations. And more 68k (TI-89) programs in the community is always a positive force, as TI has more or less disowned the entire line.
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The_Coded

Joined: 30 Jul 2012
Posts: 205

 Posted: 30 Jul 2012 10:05:07 pm    Post subject: Erm, hello I am brad..nothing really to say except that I've been interested in computer science since I was 7 and that I have been enthralled by the z80 calcs, and am trying to learn to program for one _________________
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