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Texas Instruments TI-89 Titanium Graphing Calculator - Black - Picture 1 of 4
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Texas Instruments TI-89 Titanium Graphing Calculator - Black

disabled veterans sellers choice
(728)
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US $89.99
ApproximatelyAU $138.30
or Best Offer
Condition:
Used
More information - About this item condition
Breathe easy. Returns accepted.
Postage:
US $9.98 (approx. AU $15.34) delivery in 2-4 days
Get it between Wed, 20 Aug and Fri, 22 Aug to 94104.
Located in: La Habra, California, United States
Returns:
14-day returns. Buyer pays for return postage. If you use an eBay postage label, it will be deducted from your refund amount.
Payments:
     Diners Club

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Seller assumes all responsibility for this listing.
eBay item number:365714567634
Last updated on 07 Jul, 2025 11:20:33 AESTView all revisionsView all revisions

Item specifics

Condition
Used

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

disabled veterans sellers choice

98.8% positive Feedback•1.7K items sold

Joined Oct 2018
Usually responds within 24 hours
Once upon a time, there was a brave and determined disabled veteran who had a passion for crafting and creating unique and beautiful items. Despite facing many challenges, this veteran refused to let ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
4.9
Reasonable postage costs
4.8
Postage speed
5.0
Communication
5.0

Seller feedback (488)

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  • s***3 (157)- Feedback left by buyer.
    Past month
    Verified purchase
    Item was damaged during shipping even though it was double boxed with padding. Seller refunded money very fast and did everything possible to make it right. I would not have any concerns to purchase from again.
    Rae Dunn XOXO COFFEE MUG (#365509828734)
  • w***- (103)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Fast shipping Good packing The item as described Great value The seller deserves 10 star
    Lenwile China Ardalt Japan Porcelain Pagoda Trinket Music Box 7166 (#365509819762)
  • h***m (291)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Item was packaged very securely. Shipping was timely .item as described. Great value for a vintage item. Thank you very much. Thank you for your service.
    Seinfeld Large Mug Soup Cup "No Soup for You" White Oversized M Ware 24 oz (#365640207787)
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Product ratings and reviews

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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
    13 May, 2020Top favourable 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
    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-ownedSold by: Vt793et9Q3O@Deleted

  • 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-ownedSold by: 222775

  • 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: NewSold by: dealoff

  • 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-ownedSold by: nhfastcash

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