<p>I happen to have two. One is a Ti-83 Plus Silver Edition, which I've had for about four or five years now. It is still in pretty good shape, and I finally found the connectivity cables I lost a few years ago. Only a couple of programs on it, one to identify, and one to factor, both of which I wrong. Beyond that, the only programs ever there were temporary ones used to store annoying AP Stats equations to serve as quick reference when doing homework. I want to start putting it to better use.</p>
<p>The second calculator I have is one I just bought. It is a Ti-89 Titanium Edition, which was purchased in the last week. The price was nice, at $117 plus tax, as I got a $33 in-store credit for returning a Ti-BA II Plus I got as a gift. [I would've liked to keep it as well, since it would be useful for economics or financial analytics classes, but I can always snag one later in the year, perhaps from the school bookstore, using the money on my account. With any luck, I can get the Ti-BA II Professional Edition instead, which adds functions like: Net Future Value, Modified Internal Rate of Return, Modified Duration, Payback, and Discount Payback. Amazon has a pretty good price on it too.] The 89 is much more advanced, and should do nicely for the Calc and Calc-based Stats classes I need for my major, but foolishly opted not to take in high school. I've read up on it a bit, and the calculator has alot of potential. I want to better learn the programing language it reads, so as to get maximum functionality out of it. And I definitely plan to start putting some programs on both this and the 83.</p>
<p>Those are the only two calculators I have. But, I will be running a few very high-end math programs on my computer this fall, including Mathematica, MathType, Matlab, and MINITAB. I'll be especially interested to push their limits, and see how I can try and get them to play with other programs like Snap Survey and Stella.</p>
<p>you should have waited and bought the new TI N-spire calculator. Its pretty much the same price as the TI-89 you paid for and maybe even cheaper if purchased through the right online retailer.</p>
<p>Are you allowed to use the Ti-89 in your calc class?
The college I will be attending does not even allow graphing calculators... in any math or math-related class!</p>
<p>I use Mathematica and my TI-89T extensively although that's slowly going to change during college where they are both prohibited for use on class assignments, tests, exams, and the like.</p>
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you should have waited and bought the new TI N-spire calculator. Its pretty much the same price as the TI-89 you paid for and maybe even cheaper if purchased through the right online retailer.
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<p>I hadn't heard about this until you mentioned this. Having now looked it up, I'm pleased with my decision. The Nspire has limited support for programming, and cannot do 3D graphing. And really, the general</a> design is quite bad.</p>
<p>TI-89, regular edition. I got it in spring of 7th grade; I'm now entering junior year of college and somehow it's still just about top-of-the-line. With the math classes I'm in now, though, I never use it.</p>
<p>the ti black colored one I hate it. They are so hard to use and the games always disappear. During the last months of school I used a cheap Safeway generic. they always got stolen, i only brought it to school for tests and finals. they can hold notes :)</p>
<p>Friends' sister's old 83+ with the middle row of pixels missing. Used to have my own 83+ and 89, but I think I lost one, and one got stolen. I used to only know how to program in TI-Basic, so I'd write math programs for the 89, and then use the OS update from TI's website as a ROM image for a TI-89 emulator, and let it run at full speed on my desktop =].</p>
<p>Some of the stuff I made on my emulated 89 back in the day (<a href="http://www11.brinkster.com/dilksy/calc.jpg)%5B/url%5D">http://www11.brinkster.com/dilksy/calc.jpg)</a>. I used to generate the sierpinski triangle on my 83, and then I'd re-generate it for ten frames slowly changing the window so it focused on the upper triangle. Then I had a program display them in a loop so it looked like you were zooming in forever. Great way to pass time in class.</p>
<p>I own a TI89, and previously was a TI83 user. The TI89 is a far superior calculator, it saved me more than once with math.</p>
<p>There was one calc lecturer at my college that allowed the use of graphing calculators on the exams (I had him for 2 of my 6 math courses). His logic was that it only told the answer, it didn't explain how to get to the answer... and so he made you show ALL the steps & name the rules you were using (like the power rule for derivatives). So, with the 89 I was able to double check my final answers & find out where I screwed up. But if I didn't know what I was doing, the calculator couldn't save me.</p>
<p>All my physics & chem classes allowed calculators for exams, no restrictions.</p>
%5B/url%5D%22>http://www11.brinkster.com/dilksy/calc.jpg)</a){kind=link}