	SF Deriv 1.00 alpha
	*By Serre Franois*

I/ Installation
Use your TI Graph link or TI Connect software to send the file deriv.8xk to your TI83+/83+SE, as usual...

II/ How to use this app?
Enter your equation in Y1, run the app (using the APPS key and selecting Deriv in the menu), and the differentiated equation is stored in Y2.

III/ Functions suported
Here are the current functions which are supported by this version:
+ and -
* and /
^
Cos(
Sin(
X is the variable (differentiate of X is 1)
U,V,F and G are considered as functions (differentiate will be U',V',F' and G')
Other letters are considered as constants (differentiate will be 0)

IV/ Known bugs
Currently, there is no protection against entering a false equation in Y1.
Be carreful;If you use a function that is not currently supported, you may crash your calc!
Please keep in mind to close every openned bracket too, otherwise you may crash your calc!
Every function with a syntax error may cause a crash!
You're warned...

V/ Credits
Program written by Serre Franois. (1ere S)
Special thanks to my math teacher, Mme Charlaine.

VI/ Contact
If you find a bug, or if you liked this app, please email at serref@wanadoo.fr, or post a message on www.guguss.com/driv.php.

