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- Newsgroups: sci.math
- Path: sparky!uunet!mcsun!julienas!babbage!cosmos.imag.fr!cosmos!samama
- From: samama@imag.imag.fr (Marc Samama)
- Subject: Re: Pi Finder
- Message-ID: <1992Dec14.165705.872@imag.fr>
- Sender: news@imag.fr
- Nntp-Posting-Host: chergui
- Organization: Institut Imag, Grenoble, France
- Date: Mon, 14 Dec 1992 16:57:05 GMT
- Lines: 9
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- Do you know what algorithms Mma uses to calculate Pi ? (Is it a sum of Atan.)
-
- By the way, i'd like to know where this comes from :
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- \pi / 2 = sum_{n >= 2} prod_{1 <= i <= n} {i / (2*i - 1)}
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- and how one can majorate the rest of the sum (Hope it's English!)
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- Thanks
-