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 12-05-2011 #1 (permalink) ggFTW Stalker   Join Date: Oct 2008 Posts: 1,056 iTrader: (0) Pre-Calc Problem Write the sum using sigma notation (radical 1)/1^4 + (radical 2)/2^4 + (radical 3)/3^4 ....+ (radical n)/n^4 I already tried radical n/n^4 as the formula and it says it is wrong can someone help explain how you got the answer?
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 12-05-2011 #2 (permalink) ahhhhh wait Games Awards   Join Date: Jun 2008 Location: Where there aren't witty phrases for location Posts: 2,984 Blog Entries: 253 iTrader: (9) IGN: Sandrie Class: ~ Level: e What is the start number (i=?). If it starts at at a number other than 1, it would be different. i.e: if i=0 the summation would be radical(n-1)/(n-1)^4 If it starts at 1, your answer would be right though. __________________ ((I LIEK TO RP))●rules●Dragon Nest Wiki●Eden Eternal Wiki●events@ggftw
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Quote:
 Originally Posted by Sandrie What is the start number (i=?). If it starts at at a number other than 1, it would be different. i.e: if i=0 the summation would be radical(n-1)/(n-1)^4 If it starts at 1, your answer would be right though.
yes it starts at 1, and it says my answer is wrong

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