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Texas Instruments TI-89 Titanium Graphing Calculator | |||||
 
| 80% Recommended by our customers. Manufacturer: Texas Instruments Catalog: CE Release date: 2004-06-01 Color variation: BLACK Media: Electronics Format: CD Model: TI-89 Ean: 0490800100329 Upc: 033317192038  Tip: compare prices with similar consumer electronics |
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| Top stores | Description | Price | Link to shop |
| amazon.com |
Availability: in 24 hours Current discount:25% off !! |
$149.99 | |
| used | 33 used offers, as low as... | $96.20 | see more used offers |
| refurbished | 3 refurbished offers, as low as... | $106.00 | see more refurbished offers |
| all new | 36 thirdParty new offers, as low as... | $143.85 | see more ThirdParty new offers |
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| User Reviews: |
 Written on November 11, 2008 Summary: Highly Powerful, Versatile Graphing Utility Before buying this TI-89 Titanium, I had been using a TI-86 (now discontinued) for about five or six years. I was hesitant to make the switch because I was so satisfied with my previous calculator, but was convinced of the 89's usefulness within the first week of using it. The greatest improvement over the other lines of TI calculators (discluding the n-Spire series) is the Computer Algebra System (CAS). This comes in handy on a daily basis in my Physics and Calculus courses because it saves an unbelievable amount of time in grunt-work involving simplification of expressions and solving of equations. It is very easy to input equations manipulate variables with the way the menus are set up, and the system is quite fast and accurate. Programming in the TI-89 is also streamlined as compared with the normal TI Calculator BASIC simply because of the added ability to pass arguments into programs and functions. Functions may also be defined in the homescreen and within the lines of a program. As the built-in and downloadable features of this calculator are far too numerous for me to recount, I will say that they are all very easy to use, quick to learn, and useful in many different situations. The only complaint I have about the calculator, in fact, has something to do with the CAS system and evaluating limits and such at infinity. Weird things can happen if you attempt to evaluate specific functions at infinity or differentiate or integrate specific equations. Because of this, you should verify that the calculator correctly evaluates or simplifies the type of equation or expression you enter. The errors in the system, however, are so few as to be considered negligible and will not be used on a daily basis anyway. I highly recommend this calculator for anybody in any math or science class involving heavy usage of algebra or graphing. It is a very solid unit and can be used for many different purposes. Written on October 28, 2008 Summary: Get this calculator The model I have was built in 1999. It is by far the best quality I've ever seen in an electronic device. I have used the keypad heavily for many years and there is not a single piece of lettering that has rubbed or scratched off. It performs well at all temperatures, depending on the quality of batteries. I've had if for 8 years never had a problem, will solve just about anything solvable, other than some stuff that can only be solved with computer programs like Maple. Get this if your thinking about getting an 83! It's much nicer to have equations that you can just scroll, select and renter certain variables out of long equations. Plus it can solve most complex equations, Integrate, Taylor Series ect. The maximum matrix size is 6x6, anything larger and I don't think you'd want a calculator. I've programed many programs, it works really well. Although, if your going to do some serious programming step up to the 92. Some of the HP's are impressive too, but the 89 has been time tested and works. Written on October 28, 2008 Summary: Positive review Item was shipped promptly; sufficient packing procedure. Item functions as should. The only thing was that the original packaging was opened at the top, leaving me to assume that the item had been removed at some point proir to shipment. Written on October 16, 2008 Summary: Worth it. I was required to buy one of these for calculus 1 and it is very helpful. One large problem that I had was the learning curve involved as I was used to the TI-83+, but since it comes with a guide book it was not a big deal. It is a very large leap in the computing ability of my previous calculator. Written on October 13, 2008 Summary: TI-89 Titanium Graphing Calculator bestseller9999 bestseller9999 sold me 2 Texas Instruments TI-89 Titanium Graphing Calculator. I have only good things to say about the purchase for my sons. They are good products. One stopped working and bestseller9999 replaced it very quickly. I was worried since we purchased online and could not just drive over to the store. But bestseller9999 was very helpfully and the shipping was done in just a few days. Would buy again!! |
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| Price comparison |
 Texas Instruments TI-89 Titanium Graphing... |
 Texas Instruments 94327 Ti Graphlink USB |
| Our price | $149.99 | $24.16 |
| List price | $199.99 | $24.30 |
| Lowest used price | $96.20 | $13.25 |
| Lowest new price | $143.85 | $13.49 |
| Refurbished price | $106.00 | - |
| Catalog | CE | CE |
| Release date | 2004-06-01 | - |
| Color variation | BLACK | - |
| Media | Electronics | Electronics |
| Format | CD | - |
| Model | TI-89 | 94327 |
| Ean | 0490800100329 | 3243480009966 |
| Upc | 033317192038 | 033317193431 |
| Link to shop* (opens in a new window) | BUY IT NOW* | BUY IT NOW* |
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