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From: ken@aiai.ed.ac.uk (Ken Johnson)
Newsgroups: comp.edu
Subject: Re: Subtle Math Questions
Message-ID: <4551@skye.ed.ac.uk>
Date: 24 Apr 91 19:41:51 GMT
Article-I.D.: skye.4551
References: <1991Apr23.163231.27780@beaver.cs.washington.edu> <1991Apr23.144230.14500@mailer.cc.fsu.edu> <51667@nigel.ee.udel.edu> <8641@idunno.Princeton.EDU>
Reply-To: ken@aiai.UUCP (Ken Johnson)
Organization: Bugs-R-Us
Lines: 24

In article <8641@idunno.Princeton.EDU> tycchow@phoenix.Princeton.EDU (Timothy Yi-chung Chow) writes:


>2. Is 0.9999999... equal to one or infinitely less than one?


Suppose X=0.9999...
Then 10X = 9.99999...

Therefore 10X-X = 9.999... - 0.999...
=>           9X = 9
=>            X = 1


ps By `infinitely' you probably meant `infinitesimally'.




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