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Texas Instruments TI-89 Titanium Graphing Calculator, Great Condition, Excellent

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US $89.99

ApproximatelyC $124.00

Condition:

Used

“The calculator looks unused. May have minor wear from storage without packaging. Includes ”... Read moreabout condition

Quantity:

4 available6 sold

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eBay item number:252360672032

Last updated on Jul 22, 2023 01:21:37 EDTView all revisionsView all revisions

Item specifics

Condition: Used

Seller Notes: “The calculator looks unused. May have minor wear from storage without packaging. Includes ...

UPC: 0683332278271

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

Joined Mar 2002

Our goal is to be your source for everything calculator! We have been specializing in calculator products since 2002. We carry a huge selection from all the major brands as well as unique ...

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Detailed seller ratings

Average for the last 12 months

Accurate description

5.0

Reasonable shipping cost

4.8

Shipping speed

5.0

Communication

5.0

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Seller feedback (3,937)

d***e (284)- Feedback left by buyer.
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Verified purchase
As described, good price, quick ship.
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Past year
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Excellent seller. I ordered this calculator along with one other vintage-style HP calculator. Both arrived in a timely manner, carefully packaged and as advertised. Thanks!
Hewlett Packard HP-12C Platinum RPN Calculator HP12C (#251656818680)
u***u (314)- Feedback left by buyer.
Past 6 months
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Great price and fast shipping. Great seller!
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Product ratings and reviews

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4.7

414 product ratings

354 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 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.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 c0mThis 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.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

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Texas Instruments TI-89 Titanium Graphing Calculator, Great Condition, Excellent

Shop with confidence

Item specifics

About this product

Product Identifiers

Product Key Features

Item description from the seller

CalculatorSource

100% positive feedback•13K items sold

Detailed seller ratings

Popular categories from this store

Seller feedback (3,937)

Product ratings and reviews

Most relevant reviews

Works great for my high school son

Powerful calculator

Perfect for the engineering student

PhD Mathematician in Plastic

Really great calculator.

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CalculatorSource

100% positive feedback•13K items sold

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Seller feedback (3,937)