HELP FILE FOR:
--------------------------------------------DERIVv1.0--------------------------------------------
				   BY dIvInE PRODUCTIONS, 2000
					  DIVINE.S5.COM
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FUNCTIONS OF THE PROGRAM
	The main function of this program is to derive "any" (refer to LIMITATIONS) function in a certain point. After deriving there's an option that allows you to draw a tangent in that point.




HOW TO USE DERIV
	First of all you have to introduce the expression of the function you want to derive. You can do this eitheir when running deriv or before running it (as if you were to see a graph but then you run deriv). Then, when prompted "X0" just introduce the abciss of the point to derive and press enter. That's all for deriving. Now you have several options, Exit, Restart, Draw tangent, etc... Choose the one that suits you better.

	


LIMITATIONS
As far as I know, the only limitations this program has are the ones that the ti-83 has (check your ti-83 instruction book for detais). For example if a functions' derivative is not a Real number the value returned by the ti-83 will be a bit messy. That's why you should always check out the graphic to make sure that point is derivable. 


BUGS, DOUBTS & SUGESTIONS
	I hope you don't find any bugs but if you do please report to:

	ragetm@teleweb.pt - my personal e-mail - or the e-mail indicated in www.divine.s5.com.



-------------------------------------------------------------------------------------------------					   DIVINE PRODUCTIONS 2000
					divine.s5.com
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