Texas Instruments TI-89 Titanium Graphing Calculator - Black 4A1370184

Tech Tech store
(3112)
Seller's other items
Contact seller
US $59.99
or Best Offer
or 4 interest-free payments of $15.00 available with
Condition:
Used

Additional service available

Breathe easy. Returns accepted.
Hurry before it's gone. 1 person is watching this item.
Shipping:
Free USPS Priority Mail®.
Located in: Houston, Texas, United States
Delivery:
Estimated between Mon, Jul 21 and Fri, Jul 25 to 91768
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:
14 days returns. Buyer pays for return shipping. If you use an eBay shipping label, it will be deducted from your refund amount.
Payments:
       .
4 interest-free payments of $15.00 available with Klarna.
Earn up to 5x points when you use your eBay Mastercard®. Learn moreabout earning points with eBay Mastercard

Shop with confidence

eBay Money Back Guarantee
Get the item you ordered or your money back. Learn moreeBay Money Back Guarantee - opens new window or tab
Seller assumes all responsibility for this listing.
eBay item number:316726594317
Last updated on May 01, 2025 08:00:38 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
Display Size
Regular
Power Source
Battery
Model
Texas Instruments TI-89
MPN
TI-89 TITANIUM
Category

About this product

Product Identifiers

Brand
Texas Instruments
MPN
TI-89 TITANIUM
UPC
0683332278271, 0714752467256
eBay Product ID (ePID)
1724659004

Product Key Features

Power Source
Battery
Display Size
Regular
Type
Graphing
Model
Texas Instruments TI-89

Item description from the seller

About this seller

Tech Tech store

98.4% positive feedback•18K items sold

Joined Feb 2019
Usually responds within 24 hours
🛒 About Beauty Top LLCWelcome to Beauty Top LLC — your trusted source for tested, pre-owned electronics at great prices.We offer a wide range of items, including:Docking stations & ...
See more
Visit storeContact

Detailed seller ratings

Average for the last 12 months
Accurate description
4.7
Reasonable shipping cost
5.0
Shipping speed
4.9
Communication
5.0

Popular categories from this store

See allcategories
Business & IndustrialConsumer ElectronicsMusical Instruments & GearCameras & PhotoBabyCell Phones & AccessoriesComputers/Tablets & NetworkingVideo Games & Consoles

Seller feedback (2,908)

All ratings
Positive
Neutral
Negative
See all feedback

Product ratings and reviews

Learn more
4.7
416 product ratings
  • 356 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 242 reviews
  • by warburrito
    May 13, 2020Top 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

  • by dadgum1
    Feb 13, 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-OwnedSold by: Vt793et9Q3O@Deleted

  • by msrobin2
    Sep 07, 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-OwnedSold by: 222775

  • by sterlinghhartman
    Aug 20, 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: NewSold by: dealoff

  • by pokemon1216029
    Feb 28, 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-OwnedSold by: nhfastcash

More to explore :