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Texas Instruments TI-89 Titanium Graphing Calculator - Black

4.72415 product ratings

The Maine source (378)

90.9% positive feedback

Price:

US $38.49

ApproximatelyAU $59.85

+ $27.94 postage

Estimated delivery Tue, 27 May - Mon, 9 Jun

Returns:

30-day returns. Buyer pays for return postage. If you use an eBay postage label, it will be deducted from your refund amount. Policy depends on postage service.

Condition:

Used

The Texas Instruments TI-89 Titanium Graphing Calculator is a powerful tool for mathematical computations. With its regular display size, it is easy to read and navigate through complex equations. This calculator is designed for both students and professionals, providing advanced features for graphing and calculus. It is powered by a battery, making it convenient to use on-the-go. The brand Texas Instruments is well-known for its quality and reliability. The model Texas Instruments TI-89 is a great investment for anyone in need of a reliable and efficient calculator.

Ratings and reviews

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4.7

415 product ratings

355 users rated this 5 out of 5 stars
37 users rated this 4 out of 5 stars
6 users rated this 3 out of 5 stars
2 users rated this 2 out of 5 stars
15 users rated this 1 out of 5 stars

Good value

Would recommend

Good quality

Most relevant reviews

See all 241 reviews

by warburrito
13 May, 2020
Works great for my high school son
Works great for my son who is in high school. Apparently whatever model the teacher uses has a few keys that are in different spots so not every function works using the exact same keys, but that has not been a problem for my son. However, if your child's teacher uses a specific model I would suggest getting that model instead so that learning would be easier for someone not as technologically inclined as my son.
Verified purchase: YesCondition: Pre-owned
by dadgum1
14 Feb, 2017
Powerful calculator
This is a used item of course, so the only thing guaranteed is the calc itself. I'm loving the computer algebra system on it; taking DE and Linear Algebra this semester and never knew how much of a time saver it was. Solves for x, does operations for polynomials, factors, integrates and d/dx functions, trig extpansion, etc. Only thing thats kinda a pain is matrices, but you get used to it. Wish I had this earlier. Lot of other calcs have CAS, but this is at great price too. this website lists a lot of the features and gives you a good idea of what this calc can do and gets you started using fast as well: prenhall d0t c0m /esm/app/graphing/ti89/homescreen/Menukeys/f1 d0t html replace all the d0ts and c0m
Verified purchase: YesCondition: Pre-owned
by msrobin2
08 Sep, 2016
Perfect for the engineering student
If your studying engineering this is a must have, It has all the features that you need to succeed. with it's build in computer algebra system it can evaluate and simplify expressions, and display them as they would be written by hand thus making test easier. It returns all of the equations for a quadratic variable making it the ideal cheat-a-lator. well worth your time and effort to learn how to use this jewel.
Verified purchase: YesCondition: Pre-owned
by sterlinghhartman
21 Aug, 2019
PhD Mathematician in Plastic
Incredibly powerful \. You probably won't be able to use all of its functions. On the negative side: font showing date and time is incredibly small and there is no way to increase font size.
Verified purchase: YesCondition: New
by pokemon1216029
01 Mar, 2018
Really great calculator.
The beauty of this calculator is that it can perform basic algebraic functions for you; no more binomial expansion or tedious polynomial operations. Makes checking work very easy, and is even approved for the SAT and AP examinations. And the price is right; used with barely any wear.
Verified purchase: YesCondition: Pre-owned
by ao7enyhzqkq@deleted
21 Sep, 2017
TI-89 calculator
The TI-89 calculator meets the needs for the AP Calculus high school class requirements. It took a bit to learn the features, but it works great. The price was very competitive compared to a new one. No blemishes or damage to the calculator. It is a great deal.
Verified purchase: YesCondition: Pre-owned
by jacjacbeauty47
29 Mar, 2017
this is a great tool, i love every inch of it but,
only gave 4 star as I was expecting a backlight for the price of it in the market. Aside from the backlight, it is a very useful, great tool for deeper Math.lol. it is also something you would have to know how to use, otherwise, is useless. youtube has and the website of the product itself. goodluck
Verified purchase: YesCondition: Pre-owned
by dma_8342
13 May, 2020
oldie but goodie
The ti-89 is very powerful. It's legal for the SAT/AP/PSAT but not the ACT or IB tests. While it lacks color, that's arguably not that important in a graphing calculator. What is nice is that the TI-89 can do symbolic operations and calculus, which the TI-84CE can't do. Given the cost differential against the standard TI-84 Plus CE, I'd much rather get a more powerful TI-89 at a fraction of the price, even though it's a "discontinued" model.
Verified purchase: YesCondition: Pre-owned
by brsim-81
08 May, 2018
Ti 89 titanium review
Fantastic. Bought this for AP calculus bc and my undergrad for mechanical engineering. Has tons of features and extra programs can be downloaded. Not to mention it's built like a tank
Verified purchase: YesCondition: Pre-owned
by zWFDokTYRVu@Deleted
18 Feb, 2016
So many functions!
As an Engineering student this is a must have. So many apps and capabilities. Very user friendly. Pretty print feature is bomb!
Verified purchase: YesCondition: Pre-owned