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- From: mkohlhaa@silver.ucs.indiana.edu (mike)
- Subject: Help me deal w/ infinity
- Message-ID: <BzL73K.9xr@usenet.ucs.indiana.edu>
- Sender: news@usenet.ucs.indiana.edu (USENET News System)
- Nntp-Posting-Host: silver.ucs.indiana.edu
- Organization: Indiana University
- Date: Mon, 21 Dec 1992 02:04:31 GMT
- Lines: 34
-
- Some friends and I have recently been having some discussions/arguments
- about infinity and its meaning in math.
-
- A core of our disagreement has been about .9(r) --that means .9repeating
- but I can't make a little bar over the 9. Anyhow, its been documented that
- .9(r) is equal to 1. Some of my friends think that this is some kind of
- a mathematical trick, given the following equation (keep in mind that (r)
- equals .9repeating):
-
- N=.9(r)
- 10N=9.9(r) Multiply both sides by 10
- 9N=9 Subtract N from both sides
- N=1
-
- My skeptical friends point out the "subract N from both sides" lines as
- the problem with the equation. They think that it's bogus that I am
- litterally subrtracting an N from one side, but subtracting it's equivalent,
- namely a .9(r) from the other side.
-
- I appeal to any math gurus out there to comment on the validity of .9(r)
- equals one, and anything else which may increase my understand of the
- concept of infinity and how putting an "infinite" amount of 9's after
- a decimal point can become 1.
-
- Thanks
-
-
-
-
- --
- -- Mike
- -------------------------------------------------------------------------------
- | If the above information is incorrect, then I don't even speak for myself. |
- | mkohlhaa@silver.ucs.indiana.edu | mkohlhaa@amber.ucs.indiana.edu |
-