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| Brand: Texas Instruments
Category: CE
List Price: $199.99
Buy Used: $103.99
You Save: $96.00 (48%)
New (48) Used (19) from $103.99
Avg. Customer Rating:  142 reviews
Format: Cd
Color: BLACK
Media: Electronics
Autographed: No
Memorabilia: No
Number Of Items: 1
Batteries Included: No
Operating System: N/A
Shipping Weight (lbs): 3
Dimensions (in): 10.5 x 7.5 x 2.1
MPN: TI-89
Model: TI-89
UPC: 033317192038
EAN: 0490800100329
ASIN: B0001EMLZ2
Publication Date: 2004
Availability: Usually ships in 1-2 business days
Shipping: Expedited shipping available
Condition: GREAT CONDITION !!! Includes Calculator, Front Protective Cover, Battery Cover , Manual/software on CD, and USB CABLE and UNIT to UNIT Cable !!! No Marks !! Choose Expedited shipping for 3-6 days delivery !! Purchase with confidence !!
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| Customer Reviews:
 Horrible calculator, the designers should be ashamed! January 12, 2008
3 out of 34 found this review helpful
I took this calculator to a comprehensive algebra,geometry, trig, statistics, and calculus test.
The calculator has been programmed to make very common tasks very hard to do in a speedy method. For example, when you try to calculate the cosine of an angle, you must press "second function" then "cosine." There isn't a fast dedicated cosine button. Next, somehow during the test a menu function changed. When I type "cos (20)," the calculator spits back "cos(20)", which isn't helpful! I know, I know, you're thinking my mode settings are in radians instead of degrees, but that's not the case. Despite consulting the 312 page manual, I still don't know how to make the calculator find the cosine of 20 degrees! Even worse, during my test the calculator couldn't divide 5/32 for me! It spit back "5/32", which also wasn't helpful. Again, there isn't a simple menu change that appears to correct the situation. I ended up doing long division BY HAND on the test! The calculator also tries to take you to the "home" screen, which is also a waste of time unless you want to have the option of setting the clock several times during the day. Once you are "demoted" to the "home" screen, you then have to click on the picture of the calculator to go back to a screen that allows you to do calculations! When designing this machine, the engineers should have kept the most common buttons (trig and mode settings) simple, convenient, and fast to access. I should have brought my old TI-81 to the test!!!
 Best Calculator out there for High Shcool January 8, 2008
1 out of 7 found this review helpful
I bought it and so far its been the best calculator you can use in high school. I find it handy in math B2 and B3 to I guess to have an upper hand, but its not cheating, cause its legal, but I feel I have an advantage over the other kids since they cant do stuff like solve quadratic equations, expand powers, and use x and anyother variable to actually equal that variable, so x wactually equals x unlike my older calculator the TI-83 Silver Edition. Also thers a load of programs you can download for other classes, I prefer the chemestry application which comes in habd y in AP Chemestry.
In all if your loking for a great calculator and gain an advantage over others, without cheating, get this calculator, it also makes a great present, though I rather get something else, like a video game.
 Ti-89 84 Silver or other? January 5, 2008
5 out of 6 found this review helpful
Hi there.
I owned both Ti89 and Ti84 Silver so I am trying to comment about these 2 as fair as possible.
Ti-84 is pretty good I believe. You can plot data tables and find best-fit curves, lines... to predict the trend. Further more, the built-in SOLVE is very powerful, it solve almost any equations. But the cons is it only give u one solution at a time and require you to guess. It is kinda annoying because sometime, there are more than one solutions and you have no idea how to guess. I think Ti designers force student to guess so that (they think) we will learn to guess reasonably, not just to obtain the answers. Beside, you have a whole bunch of financial functions which I have never used, let business majors people play with it. The best thing about the Ti84 is its graphing ability. You can find max, min, x-intercept, intersect (2 curves), graph 3D (third party apps).
So if you prefer numerical solving calculator, Ti-84 is a monster.
About the Ti-89:
It is a big WOW to me. In fact, I would say that the 89 offers you better bang for your bucks, just more expensive but much much much more functions than the 84. In fact, it can solve almost all problems in my Math books... However, the best thing about its solving capability is also the worst thing to students. Guess what? You go to school and let this monster "study" for you and you graduate with an empty head. Therefore, it is definitely not a best choice for students. I am a bit sorry that I have purchased the 89 right now. It is always up to you to choose. The 84 is very good choice for students and on the other hand, 89 is harmful to students. In my opinion, the Ti89 is somewhat in between of Computer Math software and a normal graphing Calculator such as the 84. And please keep this in mind: You probably aren't allowed to use the 89 during exams.
I also have heard many good feedback about the Casio graphers too. People said they beat all Ti model from 84 because they are not only cheaper but better design and functionalities than Ti84. Honestly, I don't have Casio graphing Calculator but I have Casio Scientific Calculator since I was in high school. I believe, Ti scientific calc can't compare with those Casio ones. They rocks!!! And I don't work for Ti or Casio.
Conclusion:
I believe for students (Math students) the Ti-84 or a graphing Casio is an excellent choice.
How about advanced Math? Use computer software instead. The 89 extends its solving capabilities closer to computers yet still not there yet.
So A Casio grapher (half price the Ti) and a Math software such as Maple or Maxima (Freeware)... you have optimize your investment.
I've seen better days December 30, 2007
1 out of 2 found this review helpful
Texas Instruments TI-89 Titanium Graphing Calculator
If you are a high school or college student that is going to take a calculus class, you NEED a TI 89. There is no point in buying a TI 84 , 83, etc. if you intend to take calculus, because you will end up buying a TI 89 anyway.
I like this calculator a lot, it seemed intimidating at first, but if you play around with it for a little bit and have any past experience with graphing calculators it will come easy.
However, I personally prefer the original TI 89 to the TI 89 titanium. In this calculator you have to go back to the "apps" screen if you want to go to the stats list. There are also a lot of applications that you probably will never use and seem incredibly superfluous. I noticed that my battery died in about 4 months, while the batter in the TI 89 (original version) lasted for several years and is yet to die. Finally, the TI 89 titanium is so lacking in color and prettiness in comparison to the TI 89.
So in conclusion, if you intend to be using your calculator as an alarm clock, a phone book, or calendar, and you have a surplus of AAA batteries, then this calculator is the way to go!
Fascinating November 15, 2007
1 out of 1 found this review helpful
It's really amazing, the stuff this can do. This is your best friend if you're an engineer. Does pretty much everything numerical that you'll ever have to do. It takes a while to get used to it, and finding things for the first time can be rather painful, but once you do, it's extremely useful. I bought this to make my life easier on a circuits course I'm taking, and boy, this has REALLY helped. If you dont really need to use most of the features this calculator offers though, it might make sense to go for something else, since this does take a lot of getting used to.
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