This listing sold on Sat, Jul 19 at 19:01.

Texas Instruments TI-89 Titanium Graphing Calculator - Black- Clean- Tested

US $49.00US $49.00

Sat, Jul 19, 07:01 PMSat, Jul 19, 07:01 PM

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Texas Instruments TI-89 Titanium Graphing Calculator - Black- Clean- Tested

Pappy's Vintage Audio Store

(3798)

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US $49.00

ApproximatelyC $67.98

or Best Offer

Condition:

Used

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US $9.19 (approx C $12.75) USPS Ground Advantage®.

Located in: The Colony, Texas, United States

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Estimated between Mon, Aug 25 and Thu, Aug 28 to 94104

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No returns accepted.

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eBay item number:146718671778

10% of the sale of this item will benefit St. Jude Children's Research Hospital

St. Jude Children's Research Hospital is leading the way the world understands, treats and defeats childhood cancer and other life-threatening diseases. Our mission is clear: Finding cures. Saving ...

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This sale benefits a verified non-profit partner.

Item specifics

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

UPC: 0683332278271, 0714752467256

PLG_PT_NAME: Calculators

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 Aug 2004

Usually responds within 24 hours

Pappy's Vintage Audio Store selling primarily vintage audio hobby with 10% of all sales going directly to St. Judes Children s Research Hospital. I enjoy searching the Dallas / Ft. Worth TX metroplex ...

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Detailed seller ratings

Average for the last 12 months

Accurate description

4.9

Reasonable shipping cost

4.8

Shipping speed

5.0

Communication

5.0

Seller feedback (3,930)

This item (1)

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h***t (24807)- Feedback left by buyer.
Past month
Verified purchase
Speedy Shipment! Thanks!
Reply from: corpblues- Feedback replied to by seller corpblues.- Feedback replied to by seller corpblues.
Great buyer and fast pay! Enjoy the vintage calculator! Come back soon as I add vintage items to my eBay store daily! Thank you for helping support the kids at St. Judes!

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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 - Black- Clean- Tested

Shop with confidence

10% of the sale of this item will benefit St. Jude Children's Research Hospital

Item specifics

About this product

Product Identifiers

Product Key Features

Item description from the seller

Pappy's Vintage Audio Store

100% positive feedback•8.7K items sold

Detailed seller ratings

Seller feedback (3,930)

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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Pappy's Vintage Audio Store

100% positive feedback•8.7K items sold

Detailed seller ratings

Seller feedback (3,930)