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Texas Instruments TI-89 Titanium Graphing Calculator, Black W/ Cover Tested (b5)

US $35.99
or Best Offer
Condition:
Used

Additional service available

Breathe easy. Returns accepted.
Pickup:
Shipping:
US $77.63 Standard Shipping. See detailsfor shipping
Located in: Fountain, Colorado, United States
Delivery:
Estimated between Mon, Jun 17 and Sat, Jun 22 to 43230
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the shipping service selected, the seller's shipping history, and other factors. Delivery times may vary, especially during peak periods.
Returns:
30 days returns. Buyer pays for return shipping. See details- for more information about returns
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eBay item number:374054816047
Last updated on Aug 09, 2023 13:53:24 PDTView all revisionsView all revisions

Item specifics

Condition
Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is ...
Brand
Texas Instruments
Type
Graphing
Power Source
Battery
Size
Handheld
Custom Bundle
No
Model
Texas Instruments TI-89
MPN
TI-89 TITANIUM
UPC
Does not apply

Item description from the seller

chcr-3672

chcr-3672

100% positive feedback
262 items sold
Joined Sep 2020

Detailed seller ratings

Average for the last 12 months

Accurate description
4.9
Reasonable shipping cost
4.6
Shipping speed
5.0
Communication
4.9

Seller feedback (96)

h***r (39)- Feedback left by buyer.
Past 6 months
Verified purchase
Seller shipped fast! Postal service had a problem, but seller kept great communication and solved it. Item was as listed, thanks!
a***t (98)- Feedback left by buyer.
Past 6 months
Verified purchase
Items arrived in a timely manner and were packaged very well. Condition of items was exactly as described.
e***s (214)- Feedback left by buyer.
Past month
Verified purchase
Arrived better than expected, awesome seller! Thanks again!

Product ratings and reviews

4.7
989 product ratings
  • 818 users rated this 5 out of 5 stars
  • 123 users rated this 4 out of 5 stars
  • 19 users rated this 3 out of 5 stars
  • 8 users rated this 2 out of 5 stars
  • 21 users rated this 1 out of 5 stars

Good value

Would recommend

Good quality

Most relevant reviews

  • Top favorable review

    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

  • Astounding functionality and computing power! But not beginner-friendly.

    I bought this calculator for my advanced level Calculus and Physics courses. Its functionality and computing power are astounding. I've used a TI-84 and TI-83 in the past, and the possible functions of those calculators pale in comparison to the TI-89 Titanium. It does almost everything I could want it to; it solves equations, differentiates, integrates (both definite and indefinite integrals), and graphs in three dimensions--slowly but that's to be expected, it's only a calculator. This last function is extremely valuable in multi-variable calculus. The screen is black/white but can still produce images with nice contrast. The main difference between this one and the TI-nspire is that the nspire has a colored display and a nice input keyboard, however, it lacks the ...

  • TI-89 Titanium calculator

    My primary intent in bidding on this item (TI-89 Titanium hand held calc) was in having an instrument that could create 3D graphs. The unit works well in that regard and you can rotate the finished 3D graph about a vertical or horizontal axis as well....but you cannot graph in cylindrical or spherical coordinates as is required in many engineering and physics problems and to the best of my knowledge there are no programs that you can download into the TI-89 (you can hook it up to your computer and print out graphs with it or simply study them on your desk top screen) that would allow you to do this. Aside from that the unit has performed very well although in honesty I have not had time to fully explore all of the things it can do because I have had too many 3D graphs to have to make for a ...

  • Your new best friend in Calc class

    I started my calc class with a TI-83 Plus that I used for all my other math classes. It was fine in the beginning but I felt I was wasting a lot of time doing "busy" work. This TI-89 does all the busy work for me! I now have more time to work on the actual problem that other stuff such as finding the derivatives and solving equations. This is a great handy tool to check over your work to make sure you have not made any careless errors. I have never used the Titanium version but see no downfall to using the original version. Here are some pros and cons that I feel go with this calculator. Pros: Derivatives, Solving Equations, Low Battery Meter. Cons: Price (if purchased new), Graphs can be a little hard to view. My overall opinion: If you are planning on taking a ...

  • Excellent Value

    My daughter is taking Calculus next year in high school and (of course) the teacher required the students to have the TI-89 calculator. I was not exactly pleased that I would have to purchase yet another calculator since we already purchased the TI-83 and TI-84 for previous math courses. The calculator is a very cool piece of technology. It works beautifully and will (I hope) be useful for my daughter through her college years. It has many other features that you download easily from the Internet to do other types of functions, such as finances, statistics, and an organizer (to name a few). I also found out that it has AP Calculus test questions pre-loaded on it, which will be useful at the end of this school year. Our vendor was efficient and quick to send us the product. Even ...