Re: Question about Calculus on the TI-85

To: CALC-TI@LISTS.PPP.TI.COM
Subject: Re: Question about Calculus on the TI-85
From: Scott Goehring <scott@POVERTY.BLOOMINGTON.IN.US>
Date: Tue, 3 Dec 1996 22:01:19 GMT
Organization: I need to put my ORGANIZATION here.
References: <01bbd922$12cc1260$0fc5bfcc@BR.198.53.215.120> <57hgq5$cip@news.one.net>
Reply-To: Scott Goehring <scott@POVERTY.BLOOMINGTON.IN.US>

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In article <57hgq5$cip@news.one.net>, Justin Hall <jwhall@one.net> wrote:

>What you want is f'(x), which is the straight
>derivative of the function. The 85 cannot do this using nder() right
>out, and I doubt there's a calculator anywhere that can (if there is,
>i'm buying it :P).

as others have pointed out, the TI-92 apparently does symbolic
differentiation.  so do the HP 48 series.  so did the HP 28 series,
which came out in 1986.  calculators have been doing symbolic
differentiation for at least a decade.

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