Summary: Got this for Intermediate Algebra, still using it going into Calc. Generally pretty easy to use, but most teachers use the 84, so be prepared to do some poking around and figuring it out on your own! Also, not nearly as many "how to" videos online for this one as for the 84.
The calculator is in good condition. The buttons are a bit used and ...
27 October 2014
Summary: The calculator is in good condition. The buttons are a bit used and some buttons are sticky but the calculator still functions. The calculator came with no batteries and i needed to do some troubleshooting to get it to work.
Summary: My TI-86 from highschool/college died on me, so I bought another one here. Excellent condition for being used, this model even has a GraphLink connector to connect to a computer (in addition to the standard LinkCable input/output to connect to other calculators, which my older model only had).
Summary: It is a classic. I do not know why they discontinued the 85 & 86 series, but they are the most user friendly in my opinion. The 84 will get the job done, but not as well and the 89 is just not for me. I mostly do trig and some light algebra on this for work and it makes my life much easier.
Summary: I needed a replacement for my TI-86 that just died (after 16 years), and I found the same model on Amazon that works perfectly fine. The open parenthesis button is missing the paint and a few keys stick a little, but it was worth the purchase.