Texas Instruments TI-89 Titanium Graphing Calculator
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Includes USB unit-to-unit cable, Connectivity Cable for other TI units and connection software, operating manual Doing complex calculations on a scientific calculator is much easier with the TI 89. Its large screen offers the ability to generate graphs that can illustrate your conclusions. It's especially helpful with statistic functions, such as regression analysis. The TI-89 Titanium includes all the built in functionality and power of the original TI-89. It has an increased amount of Flash ROM 500KB, quite powerful for a traditional handheld design. This is TI's most sophisticated calculator, with such features as 3D graphing, upgradable flash ROM, built-in assembly language programming, and a generous amount of user-available memory. It now includes a mini USB port. This portable symbolic, numeric, and graphing calculator is perfect for advanced mathematics and engineering applications for college and advanced coursework. Its built-in USB port makes data transfer ultra-convenient. Built-in Flash memory for archiving data(2.7MB) Finance tools, Organizer, Polynomial Root Finder, Simultaneous Equation Solver, and many more apps Fully upgradeable (electronically) through its Flash ROM chip (optional TI Graph-Link required) Computer Algebra System, differential equations, 2D-graphing and data analysis, 3D-graphing with rotations, linear algebra, interactive numeric solver, constants, unit conversions, statistical regressions Optional Assembler language Mathematical expressions appear on the display the same way as they are usually written in class or in published texts and academic journals StudyCards and Symbolic Math Guide for helping students learn more effectively Preloaded with Official AP Calculus exam review questions Built-in USB port for easy data transfer between handhelds - The TI Connect allows rapid data transfer to computers
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Technical Details
- Graphing calculator handles calculus, algebra, matrices, and statistical functions- 188 KB RAM and 2.7 MB flash memory for speed; plenty of storage for functions, programs, data
- Large 100 x 160 pixel display for split-screen views
- USB on-the-go technology for file sharing with other calculators and connecting with PCs
- Backed by 1-year warranty
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By Kit Kat (Los Angeles, CA USA)
Purchase this product as a "gift", for a cousin overseas. The cousin reported that he really liked the gift and the product itself.
By Herbert Powell (Detroit)
Many reviews have focused on what the calculator can do, but that's not all you should consider when buying something. Can something else do it better? Can something else do it cheaper? The answer to both of these questions is yes. There are several superior, and it gets better...FREE options available.
So you probably know what this thing can do if you've read the description or the other reviews, so I won't repeat that. You'll get no argument from me that this calculator can do quite a bit. But let's put things in perspective here. Did you know there's a free graphing calculator with a CAS called Geogebra that you can download? It will do almost any calculation the TI-89 will, it will graph everything (2D, not sure about 3D) with higher resolution, it will numerically and algebraically (if possible) calculate derivatives and integrals, and you can create and download interactive applets with it, making it excellent for classroom use. There are also several detailed sites and tutorials for it online, so learning how to use it is comparable to learning on a TI calculator. For the few things that a TI-89 can do and Geogebra can't, check out the new Wolfram Alpha site. Another free graphing calculator, among other things, with a CAS, including matrix algebra and curve fitting. There are many more similar programs or sites available, in particular there are several free 3D graphing programs available if the previous two sources are of no help there. You may find something completely different than the ones I mentioned, but the point is that they're out there and it seems that not many people know this.
Of course, if portability is your main concern and you don't have a laptop (an unlikely scenario nowadays), then a TI-89 is an option, but I can't think of any reason that a professional who needs a calculator would want this over some other choices. In particular, I don't know of any mathematician, engineer, or physicist who actually uses a portable graphing calculator. If they need quick calculations done, they'll use a scientific calculator or for more advanced needs, something like Mathematica or Maple, two programs that are far, far superior to this calculator.
This leaves the students and parents who are told that this calculator or something similar is a must-have, that it will be used throughout their entire career as a student. I'm a high school math teacher. These are not necessary. Sure, a calculator may be necessary at times but believe me, a scientific one will do just fine for the classroom. At home, use the freeware listed above.
Put simply, this was a great calculator a decade ago or even 5 years ago, but times have changed quickly and TI's graphing calculators and prices haven't.
By M J Marut (Santa Clara, California)
The TI -89 Titanium Calculator is a powerful calculator for Science, Engineering and Mathematics Students at both undergraduate and graduate levels. It is a great tool for plotting graphs of functions which cannot easily be comprehended by many students.
With the appropriate cable, the calculator can be connected to computer for bigger and brighter display.
By steven clauer (Phoenix)
The functions are great and there is literally nothing this thing can't do. Interface is a bit difficult, it seems as thought they ran out of room. However, once you get used to it, the calculator is indispensable. It rationalizes radicals automatically, finds derivatives and ati-derivatives. Great for checking your answers!!!!! *wink wink*
By Rishi Agrawal (San Diego, CA)
This calculator has been a solid upgrade from the TI-83 for me. It takes a bit to get used to, not something you'd want to buy the day before a test. After you get used to it, the interface makes sense and is much more useful then what was used in the TI-83. It's great that you can download programs too, which greatly expands the calculator's functionality. Aside from the grips on the outside, the calculator build quality has been pretty great after 4 years. None of the buttons have faded and the screen pixels remain intact.
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