Texas Instruments TI-89 Titanium Graphing Calculator
by Texas Instruments
|
Our Price: $134.39 You Save: $65.60 (33%) Availability: Usually ships in 24 hours Buy Used: from $80.00 (click here) Category: CE See more product details |
|---|
Customers in the UK,
Buy this product at amazon.co.uk
for British Pounds
Digital Cameras Photo Reviews of Texas Instruments TI-89 Titanium Graphing Calculator
Customer Review: Amazing calculator, can do anything
Summary: 5 Stars
This calculator really can do anything, its like a magic wand on any exam. Let me first start off by saying, check to see that your teachers allow you to use this. I of course purchased this back in my senior year of HighSchool where I was allowed to use it, then silly me. I expected that going to Clemson University as an engineer, I would be allowed to use it... I was wrong (at least for the first year you aren't) However I switched to Corporate Finance and I have yet to be able to use the TI-89 on an exam, I've been forced to settle for the TI-83. As with all TI calculators, the TI-89 seems indestructible, you can drop this thing multiple times and it won't break, its quite amazing just how good a job TI did making this thing strong. The features are countless, you can solve equations right on the main screen, do derivations, integrals, etc... My favorite part of the calculator is the Home Screen though, it has Applications listed out in icon form, which wouldn't work on a TI-83, but luckily the TI-89 has what seems to be 3 or 4 times the number of pixels that the TI-83 has (you can view a Black and white picture on the TI-89 and you'd actually be able to tell what it was). The learning curve for the TI-89 is steep, I don't think in all my years of new technology I have ever had a device that took more time learning how to use all the functions. Part of the reason the TI-89 is not allowed on most exams is that it has a notepad, that you can actually connect the calculator to your computer and write out a note sheet viewable on your calculator (or you could do it on the calculator but it takes much longer).
All in all, I love this TI-89, it knows no boundaries, and I really wish I were allowed to use this on a daily basis, because its quite remarkably all the things it can do. I've owned this for 4 years or so and its still going strong, its a great quality product!
Customer Review: ti89 is an outstanding piece of geare.But TI-nspire CAS is where education is going.
Summary: 5 Stars
The Ti-nspire Cas Graphing Calc is the calculator for any serious high school or college student. I will be the only calculator through grad school. I have taught at the High School level for 31 yr. Several system developments have converged on this piece of equipment that have to be understood before you can see the length,depth and breadth of this technology. Ti has put together an integrated class learning environment that projects the learning experience at the individual level while the whole class shares on that level. Geometric shapes can be manipulated on screen while the class views the changes that occur in the related formulas from which they come.Plans can be written, implemented on the calculator and projected onto a screen for all to see. The document concept is so flexible that I can not pursue its potential in this venue. Finally, at the graduate level you can bring a level of accuracy to your work in several number systems,not experienced at the calculator level. You can then handshake with your computer to bring presentation objects into and through your work for clarity. This is especially useful when presenting work that is highly abstract where models and examples can make the research values come alive. At the High School level tests for core subjects IE. Geometry, Algebra , Trig and pre calculus.The sophistication of this training at the High School Level is not lost in the transition to college level work, no matter what the major you pick. The document format system lends itself to open ended applications which can be stored on your computer. Fred C WendellCustomer Review: Great Calculator
Summary: 5 Stars
Before I bought a TI-89 Titanium, I had used a TI-83 Plus for four years. After taking calculus and learning about limits, derivatives, integrals, infinite series, Taylor series, differential equations, and multivariable functions, I decided that I would look for a calculator which was capable of symbolic computation. After analyzing my options, I decided on a TI-89 Titanium. The TI-89 Titanium is able to expand polynomials, factor polynomials, and do all of the calculus techniques that I mentioned -- symbolically and numerically. One of the other things I found helpful was the TI-89 Titanium's ability to plot direction fields using different algorithms (including Euler's method). One of the nicer things about this model (compared to the TI-89) is that it has USB connectivity (cord included) for installing applications and transferring data. Another nice thing is that it also supports connectivity to older model TI-89s via the old I/O port which is right next to the USB connector. I also found the "exact mode" very useful (exact mode will give you exact answers rather than decimal approximations). Yet, the most useful feature of this calculator is probably the "pretty print" feature which displays expressions as you would normally write them on paper. This feature allows you to easily see the expression that you typed in. All these features plus copy and paste ability make this calculator nearly perfect. My only complaint is that the cover does not initially slide on and off easily. However, I'm sure that with more use it will wear in. Overall this is a great calculator -- I recommend itCustomer Review: A great product
Summary: 5 Stars
First let me start off by saying this is probably overkill for algerbra and calc classes. If your on a budget, go with the TI-84. You'll also want to make sure your teacher/school will allow these on tests. They are very powerful, so some schools/teachers won't allow them.
That being said I think the best way to determin if you need this or the 84 is to compare them side by side:
The TI-89...
- CAS allows it to add variables (ie x + x will give you 2x)
- Much more advanced in terms of features (I could write a whole page about that)
- 3rd party app support allows you to download applications to add even more features.
- Faster than the TI-84
- Not allowed on some tests
- More expensive
- Very different from the TI-84, so there is a learning curve. Also for school if your teacher is not using it (they tend to use the 84s for Calc and Algerbra) they may not be able to help you with it.
The TI-84...
- Cheaper
- Commonly used by schools, along with the TI-83 (which has the same layout thus, instructions for the TI-83 will work on the 84 as well). Most algerbra and Calc teachers will be able to assist you with any problems.
- Allowed on almost any test
- Like the 89, it has great support for third party apps.
- Less advanced, so there is less of a learning curve.
- Lacks the advanced features of the 89
Both calculators will last you through you college/university years and possibly into your career. The question is do you need the extra features of the TI-89?
Customer Review: ELECTRICAL ENGINEERING TOOL
Summary: 5 Stars
As an Electrical Engineer, I know that usually a good calculator that is bought at University years, will most probably be with you for life. Mine is an old Casio FX-850P, which back then was a marvel!
Nowadays, my nephew is also studying Electrical Engineering, he wanted/needed a calculator.
A sort of netbook could have been usefull, since they are very small, light, portable, and it's possible to run all kinds of software. But some courses only allow calculators, netbooks and laptops are prohibited. In addition, a calculator is smaller (fits in your pocket), lighter, and the battery life is much much larger. (Have you ever run out of batteries in the middle of important work while using a laptop? It usually happens! Now imagine that in the mid of a test!!!).
After doing some research myself, looks like the TI-89 is the best tool currently available. (HP used to make the best ones, but on the past years most people seem to agree that quality is subpar, and usability has decreased. A shame).
Also important, most of my nephew's classmates also use TI-89's, so I bought this as a gift to him.
TI-89's are extremely versatile programmable calculators/computers. There is a very large community of users who have written software for those things not already within. And if required, anyone with some programming and technical knowledge can write their own programs.
My nephew has used it for a few weeks and so far is very happy. It has already been very useful with some of his classes.