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

It was an excellent product. Make my mathematical calculations easier. I'm absolutely loving my TI-89!!!

My daughter uses it daily for almost 2 years. It would be my go to as well if I had to purchase another one. It has all the functions needed for calculus and engineering courses. The choice is yours but this tool works well and some of my colleagues would swear by it as well

The Ti-89 has many time saving features. Foe physics, math, and any engineering field, this is a must have tool. Solving multi-variable equations, linear algebra matrices, or differential equations takes half to a quarter of the time. It does take some time to get used to all the functions and how to impliment them using the correct syntax, but well worth the learning time.

Helped me get through school. All the cool engineers had one. Really the only reason i got it was for solving integrals during electrical engineering exams because by that point in school professors aren't trying to figure out if you can solve an integral. They care more about whether you can set it up properly abd give a correct answer. Gonna be honest, though, during my job if i had to solve an integral I'd just use wolfram alpha instead. I'd use my lightweight ti-36x pro on a normal basis. Works great, lightweight, and what I'm most familiar with because it's the best calculator you can use that's still usable on the national exams. Great for on the job calculations.

I had one for nearly 7 years before it broke, and had no problems during that time. This one is a replacement for it and I love it just as much. I am an engineering student in college and I would not have been able to get through the coursework without this calculator. It is intuitive to use, and very powerful with excellent battery life. This might be a little too much if you are just doing basic math classes so you would probably be better off saving your money, but if you are going into something math and science heavy, this calculator is worth every penny

Have only used it once it works exactly as it should

Has a lot of power in a small package. Can do many things a computer can, but in a smaller package. The price is teep, especially considering the non-Titanium version is much less and does most of the same things.

This calculator is great for those taking college level calculus classes. It's easy to use and has loads of functions. A little pricey, but was a requirement for class.