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- Newsgroups: sci.math
- Path: sparky!uunet!destroyer!cs.ubc.ca!newsserver.sfu.ca!sfu.ca!gay
- From: gay@selkirk.sfu.ca (Ian D. Gay)
- Subject: Re: 1+1/2+1/3+1/4+...+1/n
- Message-ID: <gay.722196763@sfu.ca>
- Sender: news@sfu.ca
- Organization: Simon Fraser University, Burnaby, B.C., Canada
- References: <92324.132329K3032E2@ALIJKU11.BITNET>
- Date: Thu, 19 Nov 1992 18:12:43 GMT
- Lines: 28
-
- Mutter Christoph Johannes <K3032E2@ALIJKU11.BITNET> writes:
-
- >Hallo.
- >I've a problem. I have to calculate the sum 1+1/2+1/3+1/4+...+1/n.
- >The result should be 100. But my computer is far too slow, to solve this
- >problem. I need the index n when the sum > 100.0
- >And that exactly.
- >Has anyone calculated this? (Perhaps on a CRAY|) ?
- >Thanks.
-
- >Chris. ------------
-
- Everybody's computer is too slow!
-
- 1 = 1
- 1/2 + 1/3 < 1
- 1/4 + 1/5 + 1/6 + 1/7 < 1
- etc.
- You will need to sum at least 100 such lines, and the 100th line
- has 2^99 terms!
-
- So the problem has to be solved by mathematics, not by computation.
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