TI-M: Re: Re: TIM:Stupid question(?)
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TI-M: Re: Re: TIM:Stupid question(?)
The centered difference formula is usually more accurate and just as easy to
use.
f ' (x) ~= (f(x + h) - f(x - h))/(2h)
for very small values of h.
----- Original Message -----
From: "Greg" <newstome2001@yahoo.com>
To: <ti-math@lists.ticalc.org>
Sent: Thursday, October 26, 2000 22:30
Subject: TI-M: Re: TIM:Stupid question(?)
>
> if accuracy is not that important you could just do change in y divided by
> change in x (that good ol slp formula) it won't always be perfect but as
> long as the points are not toooooo far apart it should usually work
> my 2 cents...
>
> Greg
> _________________________________
> All parts should go together without forcing. You must remember that the
> parts you are reassembling were disassembled by you. Therefore, if you
can't
> get them together again, there must be a reason. By all means, do not use
a
> hammer.
> -- IBM maintenance manual, 1925
>
> ----- Original Message -----
> From: <Rgdtad@aol.com>
> To: <ti-math@lists.ticalc.org>
> Sent: Thursday, October 26, 2000 7:36 PM
> Subject: TI-M: TIM:Stupid question(?)
>
>
> >
> > Hi, first I am going to give you a little background. I am in
> pre-cal,
> > and the engineering team at my school. My math teacher is already
> somewhat
> > mad at me for distributing MATH programs of MY design in class, so I am
> > almost afraid to ask her this.
> > I know that this is a stupid question, but I was wondering how I
could
> > define a hill that could logically exist (e.g., not 1/x, but maybe a sin
> > function) and then get the slope of that hill at any given point. I
know
> > about derivatives, but they are awfully slow and I am looking for
> something a
> > bit faster.
> > I am using a TI-86, and the purpose of this model is to design a
> 'soapbox
> > derby' car.
>
>
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References: