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Texas Instruments TI-89 Graphing Calculator - Black Teated/Working
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Texas Instruments TI-89 Graphing Calculator - Black Teated/Working
US $34.99US $34.99
Thu, 21 Aug, 08:40Thu, 21 Aug, 08:40
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Texas Instruments TI-89 Graphing Calculator - Black Teated/Working

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(143)
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US $34.99
ApproximatelyAU $54.38
or Best Offer
Was US $49.99 What does this price mean?
The seller’s previous price is required to be the previous selling price or recommended retail price (RRP) at which it was offered and/or sold for a reasonable period of time immediately prior to the discount.
Save US $15.00 (30% off)
Condition:
Used
More information - About this item condition
“In good pre-owned condition. See photos for details.”
Ended: 21 Aug, 2025 08:40:04 AEST
Sell one like this
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    Postage:
    US $5.99 (approx. AU $9.31) USPS Ground Advantage®.
    Located in: Milton, Florida, United States
    Delivery:
    Estimated between Mon, 25 Aug and Thu, 28 Aug to 94104
    Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the postage service selected, the seller's postage history, and other factors. Delivery times may vary, especially during peak periods.
    Returns:
    30-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:306315710967

    Item specifics

    Condition
    Used
    Seller notes
    “In good pre-owned condition. See photos for details.”
    Key Size
    Regular
    Size
    Handheld
    Features
    Calculus, Programmable

    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

    Trending Flipz

    97.7% positive Feedback•265 items sold

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    Detailed seller ratings

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

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    Seller feedback (147)

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    • a***- (113)- Feedback left by buyer.
      Past 6 months
      Verified purchase
      He Gave me a great price. And received the package . Within.one day the orders were on.my porch. Excellent seller. In every way.
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      Past 6 months
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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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