## Texas Instruments

# Texas Instruments TI-89 Calculator, Titanium Graphing Functionality

This versatile graphing calculator features advanced functionality and 3-D graphing that makes problem-solving for AP, advanced mathematics and engineering courses easier.

- Handles calculus, algebra, matrices, and statistical functions
- 188 KB RAM and 2.7 MB flash memory for speed; plenty of storage for functions, programs and data
- Titanium TI-89 graphic calculator is ideal for AP advanced mathematics and engineering courses
- Many preloaded applications
- Built-in USB port makes data transfer ultra-convenient
- Advanced functionality and 3-D graphing
- 3x the memory of the TI-89
- Advanced functionality and 3-D graphing
- Titanium TI-89 graphic calculator is allowed for use on the AP Calculus, AP Statistics, AP Physics, AP Chemistry, PSAT/NMSQT, SAT I, SAT II, and Math IC & IIC exams

## The TI-89 Calculator Performs Complex Calculations with Ease

This TI-89 calculator performs advanced 3-D graphing functionality that makes problem-solving for AP, advanced mathematics and engineering courses easier. Built-in Computer Algebra System (CAS) allows you to explore and manipulate mathematical expressions in symbolic form.

### Calculate with precision

Solve equations symbolically; factor and expand variable expressions; complete the square; and find anti-derivatives, computer limits and exact solutions in irrational forms on a powerful CAS platform.

### Display expressions in proper notation

Visualize and edit complex expressions. The calculator’s Pretty Print feature is an innovative enhancement that displays equations and results with radical notation, stacked fractions and superscript exponents.

### Simplify collection and analysis of real-world data

Discover how math and science work in the real world by measuring motion, temperature, light, sound, force and more with compatible sensors from TI and Vernier Software & Technology importing the data via the Calculator-Based Laboratory™ CBL 2™ system.

### Built-in Functionality

- Electronically upgradeable graphing calculator gives you the most up-to-date functionality and software applications (Apps).
- About 188 K bytes of user-available RAM.
- About 2.7 MB of user-available Flash ROM for data archive and apps.
- 100 x 160 pixel display.
- Internal clock with date and time display.
- Icon desktop that allows easier access to apps and editors.
- USB port for computer connectivity, unit-to-unit communication with TI-89 Titanium graphing calculators via Presentation Link™ adapter.
- I/O port for communication with other TI products.
- TI Connectivity Cable included.
- TI Connectivity Cable and TI Connect™ software allow information to be transferred to and from a computer and printed or stored on disk.
- Included apps: CellSheet™, EE*Pro®, Finance, NoteFolio™, Organizer, Polynomial Root Finder, Simultaneous Equation Solver, StudyCards™, Symbolic Math Guide.
- Apps are available from TI and other leading developers.
- Advanced Mathematics Software functionality is suitable for college mathematics and engineering coursework.
- Pretty Print shows equations and results with radical notation, stacked fractions and superscript exponents.
- Active Calculator Home history screen can hold up to 99 previous entries for deep recall.
- Real and complex numeric results.
- Symbolic manipulation for algebra, calculus and differential equations.
- Over 100 symbolic units in 28 categories for use in equations, computations and unit conversions.
- Twenty stored constants with symbolic units for scientific calculations.
- Graphs functions, parametric and polar equations, recursively-defined sequences, three-dimensional surfaces, and differential equations.
- Up to 99 graphing equations defined and saved for each graphing mode.
- Numeric evaluation of functions in tables and data variable format.
- Interactive analysis of function values, roots, maximums, minimums, integrals, derivatives, intersections, inflection points, and arc lengths.
- Recursively-defined sequences access any number of previous terms.
- Slope and direction fields for exploring differential equations.
- RK and Euler numeric differential equation solving methods.
- Real time rotation of 3-D surfaces.
- List-based one- and two-variable statistical analysis, including 10 regression models.
- Statistics plots including scatter, xy-line, box and modified box plots. Histograms and regression lines are available.
- Matrix operations including inverse, determinant, transpose, augment, elementary row operations and reduced row echelon form. Matrix elements can be real or complex and numeric or symbolic.
- Advanced matrix operations including eigenvalues, eigenvectors, LU and QR decompositions.
- Column-logic expressions in data/matrix editor are retained for automatic recalculation when values change.
- Interactive numeric equation solver.
- Hexadecimal and binary operations and conversions.
- Extensive programming capability with number and size of programs limited only by available memory.
- User-definable functions extend built-in functionality.
- Optional assembly language programming.
- Alphabetical CATALOG to access and show "help" information for each function and command.
- Memory management to create folders for specific applications or subjects.
- 255 symbols in the character set including Greek, system and international characters.
- Compatible with Calculator-Based Laboratory™ (CBL 2™) and Calculator-Based Ranger™ (CBR™) Systems to allow collection and analysis of real-world data.
- Link with another TI-89 Titanium, TI-89 calculators, Voyage™ 200, TI-92 Plus or TI-92.
- Powered by four AAA batteries with a Silver Oxide battery backup to protect RAM memory during main battery change.
- Impact-resistant slide case.

## User Reviews

User: Ian A.

User Rating: ★★★★★

This is really the best TI-89 calculator I have ever owned. I love everything about. You can even download apps to help you with certain school subjects. I personally found the study card app helpful and some other apps sold by 3rd party vendors to help solve, and explain difficult math problems. This is the best non-colored screen calculator. This is important because if you have a calculator with a bright colored screen, you might get a lot of negative attention from teachers thinking you have an advantage and they wont allow you to use it.

User: Katherine

User Rating: ★★★★★

This calculator is very nice. I reccomend this a lot when you have to buy the calculator. This has all the funny and exciting functions and options we can press advantage. Differently from others, this can be used for calculus and other mathmtical subjects. I haven't used this a lot yet, but I am expecting them a lot 🙂 Untill now, I've used this for lots of calculations and graphing something! I really recommend you this a lot..Oh, in addition, when you divide something by something, the answer does not come up with decimals, but with fractions. This is very useful when you are middle of process!

User: Copper Cavalier

User Rating: ★★★★★

My family has been through a few of these Texas Instruments graphing calculators over the years. Each teacher seems to require a different version! Although we bought the calculators grudgingly, we have always been pleased with their performance. They do exactly what the are supposed to do, with excellent battery life. Each calculator comes with a very detailed manual explaining the calculator's extremely complex functions. We've experienced no issues at all with these calculators. If they will help your child to pass math, they are well worth the price!

User: MOLLY C.

User Rating: ★★★★

Great product, great service. The manager and cashier were super friendly and helpful in ordering my calculator. My calculator is wonderful and i can do so much more with it than any other I've ever had, and now I'm passing my pre-calculus class.

User: SVTHOMAS

User Rating: ★★★★★

I am currently an Engineering student and bought his to replace my TI-84. After getting used to the button and interface, I wouldn't go back to the TI-84 if you paid. I absolutely love this TI-89 calculator. The fact I can quickly and easily scroll up and pull down past calculations and use the result in future calculations is terrific and time-saving. Writing applications on my computer and transferring them is simple and easy--I've found that I do this a lot, now. Saves time when computing redundant calculations on exams.

The only negative I can think to mention is that TI could have done a better job alerting the user about the battery getting low. I use the calculator a lot--at least a few hours each day--and when it dies it simply shuts off. In each instance I have been given zero warning, the screen just suddenly went blank. If you rely on this calculator keep a spare set of batteries in your bag at all times.

User: Walter C.

User Rating: ★★★★

Greatest Graphing Calculator with The Worst Display. The Display on this (TI 89) Is the worst I have ever seen. For me it is extremely difficult to see the display. I also have a TI 84 and a TI 36 so I am not picking on TI, I love all three but I often use the other calculators when I want to use the 89 because of the display. They could use this at the DMV for vision tests.

User: fabiana b.

User Rating: ★★★★★

Calculator Texas TI-89, excellent calculator, my son needed for Calculus II and the 110% best price guaranty from Staples was the best deal in the market.