perplexus.info :: Just Math : Summing square inverses

Summing square inverses (Posted on 2011-12-25)

Determine the value of :

(1+1^-2+2^-2)^1/2 + (1+2^-2+3^-2)^1/2 +......+ (1+2010^-2+2011^-2)^1/2

*** For an extra challenge, solve this puzzle using only pen and paper.

See The Solution Submitted by K Sengupta

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Subject	Author	Date
Pen and paper solution	Jer	2011-12-25 17:23:09
with the aid of a computer	Charlie	2011-12-25 14:42:59

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