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help!!

Revision en3, by S0cI0pAtH, 2016-04-01 09:03:12

How i can solve it if n = 5000 in the following problem ? http://postimg.org/image/4cfbw9vc5/ thanks in advance :)

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  Rev. Lang. By When Δ Comment
en3 English S0cI0pAtH 2016-04-01 09:03:12 35 Tiny change: 'roblem ?\n\nthanks i' -> 'roblem ?\nhttp://postimg.org/image/4cfbw9vc5/\nthanks i'
en2 English S0cI0pAtH 2016-04-01 09:00:20 27 Tiny change: ' problem ?' - (published)
en1 English S0cI0pAtH 2016-04-01 08:57:04 64 Initial revision (saved to drafts)