[TI-M] Re: Derivative on 83+

To: ti-math@lists.ticalc.org
Subject: [TI-M] Re: Derivative on 83+
From: Jonas Jacobsson <jonas@cytech.nu>
Date: Wed, 04 Sep 2002 01:36:09 +0200
References: <3D75389F.8020505@cytech.nu> <3D753993.000001.02184@robertmohr>
Reply-To: ti-math@lists.ticalc.org
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.0) Gecko/20020530

Robert Mohr wrote:
 >>I know how to calculate the (numerical) derivative of
 >>a function(x). But is there a way to see the derivative's
 >>function?

> If you have a TI-89/TI-92+/V200PLT, use d(function,var), and access d( by
> hitting [2nd][8].  If you have a TI-83+ you can use Symbolic, but I don't
> know how it works.  If not, you have to calculate it yourself.  Sorry.

I've installed Symbolic and it added a new MATH called
d() just as the TI-89. It works as:

d(string1,string2)

Input : d("8X^2-4","X")
Return: 16*X

Thanks!

Is there a way to implement this new command (function)
on Y2 if the original function is on Y1?

Like...

Y1=8X^2-4
Y2=d(Y1,"X")

(But this returns an error)

I would also be very glad if there was a way to draw the
deraivative's function direct on the graph when I have
calculated a deraivative. (The line passing trough.)

/jonas

Follow-Ups:

[TI-M] Re: Derivative on 83+

From: jeff <jefromi42@yahoo.com>

References:

[TI-M] Derivative

From: Jonas Jacobsson <jonas@cytech.nu>

[TI-M] Re: Derivative

From: "Robert Mohr" <rmohr@calcware.org>