Texas Instruments - TI-89 Titanium Graphing Calculator, Pixel Display

I bought this to replace an older model TI-89 that was no longer working. I use this for Calculus and Physics. It has some different features from the older TI-89, but I was able to use it for my purposes straight out of the package without having to look at the manual. I do think that these things are a bit overpriced. I was also not crazy about the curved layout of the keypad, but I am getting used to it. I do not like the home screen, and I think that after all these years, the screen quality could have been improved. I like the calculator, but I am rather unimpressed. I would never have upgraded if my old one had still been functional. I just needed a graphing calculator that could do integrals.

This is an amazing calculator that is capable of performing most advanced calculations. Can be used in conjunction with an optional USB cable in order to upload data points and programs. This has same functionality as TI-92 minus the full keyboard. I had no problem using this calculator on test or exams, but I would recommend checking with your Professor/Teacher prior to purchasing.

I purchased this for a class I'm taking and it really simplifies solving equations. Has a lot of capabilities that were not available a few years ago.

I purchased this after giving my TI-83 to a sibling. This calculator is light years ahead of the 83. The screen is sharper, there's more memory for storing programs, and there are many more functions than my old graphing calculator. The TI-89 has helped me so much with my college calculus & physics courses. Texas Instruments has really outdone themselves with this.

The price should keep most people just looking to add and subtract away, but if you're in calculus, this is the one for you!! Features FAR beyond the TI-84+, and better screen resolution and battery life. I used this one for three years in college. GREAT calc! Good investment for students, I still use mine!

I received this product summer of 2005. The capabilities of this product is seemingly endless! When it comes to math, this calculator far exceeds the capabilities of my old TI83+. It can solve your calculus problems in a jiffy, and it has the ability to do enough math functions to satisfy a high school or college student. If there is anything lacking, there are websites where users can upload calculator programs and games. The battery life on this is simply amazing, I recharge my batteries perhaps once a year. Now that I am no longer taking math, I use still use my TI89T as a calendar, and note taker. It also stores all of my phone numbers, which came in handy when I switched cell phones. In other words, this calculator can do almost anything you want it to do!

This calculator is an Engineering sutdents dream. This is helped me so much through out my studies. Check your anwsers, check the soultion, graph the soloution. Its great.

I bought this few months ago, and im using it for my calculus class, it is hard to use(because it is very different from other graph calculator) but once u know how to use this, there is nothing better than this calculator for math class(higher than calculus)