TIB: A derivative check program...

To: ti-basic@lists.ticalc.org
Subject: TIB: A derivative check program...
From: Brice-Olivier Demory <brice.demory@span.ch>
Date: Sat, 09 Jan 1999 11:26:19 +0100
Delivered-To: ti-basic-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: ti-basic@lists.ticalc.org


Hi all ! I wish you an happy new year 1999 !
In two years, we'll enter in the third millenium !

I'd like to have a derivative program on my ti85.
Does a program could calculate the deritative f'(x) for a given f(x) ?
Does it exists ?

Or, I'd like to make one, here is my idea :
I enter a f(x) -y1 and f'(x) - y2. I make a program which calculates some
der1(y1,x,...). After, I ask the calc to calculate the same x values
for y2. And I make tests to compare them.
But I don't know how to do this program.
Could anyone help me ?
Has someone got a better idea for a "derivative" checker program ?
Does this program exists ?

Thank you for your answer !

Brice-Olivier Demory - http://www.skylink-astro.net/pagepers/demory
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