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Texas Instruments TI-89 Titanium Graphing Calculator - Black #5

TheSlimer65
(1538)
Registered as a private seller
Consumer protection regulations resulting from EU consumer law are therefore not applicable. eBay buyer protection still applies to most purchases.
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US $59.99
Approximately£44.40
Condition:
Used
Postage:
US $10.50 (approx £7.77) USPS Ground Advantage®.
Located in: Wichita Falls, Texas, United States
Delivery:
Estimated between Wed, 30 Jul and Tue, 5 Aug to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the delivery service selected, the seller's delivery history and other factors. Delivery times may vary, especially during peak periods.
Returns:
No returns accepted.
Payments:
    Diners Club

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eBay item number:286583859551

Item specifics

Condition
Used: An item that has been previously used. The item may have some signs of cosmetic wear, but is ...

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

TheSlimer65

100% positive Feedback•6.3K items sold

Joined Apr 2008
Registered as a private sellerThereby, consumer rights stemming from EU consumer protection law do not apply. eBay buyer protection still applies to most purchases.
I take great pride in providing you with a personalized and exceptional shopping experience. When you step into my virtual store, you'll find a curated selection of items that cater to your diverse ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
4.9
Reasonable postage cost
4.7
Delivery time
5.0
Communication
5.0

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Seller Feedback (1,458)

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  • z***i (15)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Quality was exactly as depicted if not better. I wouldn’t have even known it was used. It works perfectly fine, shipped and delivered to me in a very timely manner as well! Packaging was super secure, wrapped heavily in bubble wrap so it couldn’t bump around in the box or the mail truck. Very worth the price, would buy from this seller again! :)
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  • i***e (420)- Feedback left by buyer.
    Past month
    Verified purchase
    Shipping was fast and packaging done correctly. Item arrived as described. Value added to my collection. Great Seller….easy transaction too! Thank you!
    Polaroid Amigo 620 SE Instant Land Camera With Strap (#286625319863)
  • a***p (12)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Great seller, super easy and quick communication, product arrived safe and as described! Mini figures were packaged well and in a safely shipped box.
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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, 2020Most 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
    13 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
    07 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
    20 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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