How do I reset the TI-89  memory?
Before resetting, you should back up your device using i.e.
TI Connect Device Explorer -> Actions -> Backup Device. 

There are a few reset options:
1) take out all 4+1=5 batteries for a moment
or
2) Press and hold left arrow, right arrow and 2nd keys. Next, press and release ON.

or

3)  Take out a AAA battery and while putting it back in, hold the (-) and ) buttons.

or 
4) press 2nd 6  [MEM] -> F1 -> reset all memory.

Next, reinstall the Made Easy Apps first. 
 

How do I receive the program?
Simply click on the PayPal - Buy Now - button for the calculator that you own. Next make your secure payment using a credit card or PayPal account. Programs can be downloaded at any time. The key will be automatically emailed immediately after payment is made. Keys for upgrades will be emailed within one day. For upgrades: Please provide estimated time when software was purchased originally for verification. Next use the TI Connect software to transfer the APP to your calculator, enter key. Total time: 5 min. 

How do I use the Calculus Program? 
Calculus Made Easy serves primarily three purposes: 
1) Calculus problems can be solved step by step. Enter the function and follow step by step if your homework problem was done correctly.
2) Calculus concepts can be learned by viewing visual calculator animations.
3) Teachers and students can solve any Calculus problems immediately. Even complicated problems (i.e. 2nd derivative or vertical tangent lines of implicitly defined curves or solutions to differential equations and slope fields, etc...) can be verified immediately. Literally, any problem can be solved with the Calculus Made Easy program - an enormous help !!! 

How many of your programs fit onto my calculator?
All of them. The programs only use RAM memory when being used. Otherwise, they reside in Flash ROM.

How do I transfer the APPS to my calculator?
Using the TI Device Explorer of the TI-Connect software (downloadable at http://education.ti.com/ ), simply drag the saved APP onto your TI Device Explorer window. Watch a How-To-Video here (1.1MB -needs Flash Player). Alternatively, right mouse click the app and select SEND to TI Device.

User Testimony: 
A.C.: "It is the best Calculus program in the world because it covers everything that is AP Calculus relevant."   
L.N.: "It cut down a lot of time on checking answers, it helped a great deal."
R.R.: "I learned a lot of Calculus by using the program."    
P.W.: "The program makes learning Calculus really easy. The animations help a great deal. This program was created with a lot of care."
M.S.: "I am not quite sure how I would have survived AP Calculus without the program."
 
 
What are the payment options?
Use to pay with credit card or use your PayPal account. 

Alternatively, you may use . Contact us for the required WU information.

Once paid, email us the Money Transfer Code and your Calculator ID.
We will email you the key as soon as money is ready for pick up. 

Can I get a new key for another calculator?
No. Each key purchase is per calculator only. In case of using a new calculator (due to loss, theft, malfunctioning, etc) the purchase of a new key is necessary. 

What is a Site License?
If a program is not only used by one person (i.e. the teacher ) but made accessible to others such as students or other teachers within the school, a site license must be acquired by the school.


How do I run the program? 
After installing a "Made Easy" APP, hit APPS and select this APP. 

Does the Calculus program show step by step solutions? 
Step by Step solutions are shown for Integration and Differentiation as well as almost all other areas of Calculus. See examples here:  

Is there any documentation for the Calculus app?
Yes, there is. Just follow the link: documentation 
 

What Operating System does my TI-89 have to have?
You need 3.10 (Ti89 Titanium and Voyage 200 ) or 2.09 (TI89)   (To find your OS select TOOLS on the HOME SCREEN, select option A: ABOUT. You may have to update your OS using the TI Connect software to be downloaded at http://education.ti.com/ .)   .

It is a wise idea to have the latest OS installed.
 

How about compatibility with Mac OS X?
TI states that TI-89 is currently not compatible with Mac OS X 10.6.8 . We suggest to either use a different computer (school, friend, neighbor, ..) or to use the free TI Linking Program TILP. 

For questions:  [email protected]