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Internet Message Format  |  1992-12-22  |  824 b 
  1. Path: sparky!uunet!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!darwin.sura.net!jvnc.net!yale.edu!ira.uka.de!rz.uni-karlsruhe.de!not-for-mail
  2. From: NE28@DKAUNI2.BITNET
  3. Newsgroups: sci.physics
  4. Subject: Re: Help me deal w/ infinity
  5. Date: 21 Dec 1992 20:47:20 +0100
  6. Organization: University of Karlsruhe, Germany
  7. Lines: 12
  8. Sender: usenet@nz12.rz.uni-karlsruhe.de
  9. Distribution: world
  10. Message-ID: <1h5708INNblo@nz12.rz.uni-karlsruhe.de>
  11.  
  12. I don't really see your problem, because in my opinion 0.9(r)
  13. is equal to one.
  14. Proof:
  15. Consider the sum 0.9+0.09+0.009+.....
  16. It can be easily rewritten as 9*Sum((1/10)^n),n=1 to infinity.
  17. This is just the geometrical sum.
  18. the limit of the above is 9*(1/(1-(1/10)))-9
  19. (the -9 is because the geometrical sum starts with n=0.)
  20. that is (10/9)*9-9=1.
  21. So you see 1=0.9(r)
  22. Greetings
  23. Carsten Grueber
  24.