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Original Usenet message from alt.ascii-art, 8 Nov 1997.
Way off Topic: Re: Time for a new FAQ? [ plus a tiny fractio

Way off Topic: Re: Time for a new FAQ? [ plus a tiny fraction of my ascii collection... ;) ]

> Ooooh, Calculus... I think I'll stick my nose in here and spew some
> useless fact that likely nobody really cares about.
> 
> Technically it is true that the slope of a vertical line is undefined,
> most math geeks say it has an infinite slope because...
> 
>    The formula for slope is   Rise    ( y / x )
>                              ------
>                               Run
> 
> So as x approaches 0, the slope gets larger and larger and larger, pretty
> much going off to infinity... So while it is true that the slope of a
> vertical line is undefined, the term "infinite slope" is used just to be
> more specific...
> 
> I hope y'all were paying attention, there's going to be a quiz later...
> 

Well, the *right* way to define slope is as belonging to the set of all
pairs (x,y), under the equivalence relation (x,y)~(x1,y1) iff
x*y1=x1*y. So the slope of the vertical line is [(0,1)] (That is, the
equivalence relation of the pair (0,1).).

Sorry for going off topic, just my 0.02$ worth.
--
Moshe Zadka - moshez(at)math(dot)huji(dot)ac(dot)il
Linux - The Choice of a GNU generation. Using 2.1.60.
C - A portable assembly language.

Original message headers
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: f996b,b217f9de36ff9682
X-Google-Attributes: gidf996b,public
From: Moshe Zadka <mos...@ladybug.org.il>
Subject: Way off Topic: Re: Time for a new FAQ? [ plus a tiny fraction of my ascii collection...  ;) ]
Date: 1997/11/08
Message-ID: <Pin...@ladybug.org.il>#1/1
X-Deja-AN: 287937952
References: <345...@spamfree.land> <345...@on.spammer> <345...@slip.net> <345...@slip.net> <63mf1k$n9...@ds2.acs.ucalgary.ca>
Organization: The hebrew University of Jerusalem
X-Files: Truth Out There
Newsgroups: alt.ascii-art
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