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In the middle of the article about Franciscus Vieta, here:

http://en.wikipedia.org/wiki/Franciscus_Vieta

I see an infinite product as an expression for Pi:

2 * 2/2^(1/2) * 2/(2+(2^(1/2))^(1/2) * ...

I was wondering, how this could be written in compact form using math notation please?

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# Homework Help: Compact form for an infinite multiplication

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