anonymous
  • anonymous
Σ (2+k^2) where k=-1 and N=27
Mathematics
chestercat
  • chestercat
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chestercat
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anonymous
  • anonymous
(2+(-1)²)+(2+(0)²)+(2+(1)²)+(2+(2)²)+...+(2+(27)²) = 6989
anonymous
  • anonymous
can you show the formula not the extended ? and explain how to shift?
anonymous
  • anonymous
its like Σ [2+(k+1)^2 where k=1 and n=29

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anonymous
  • anonymous
i undertstand the that you use n(n+1)(2n+1)\6 but im lost with the shifting the index where does it come into play with the formula?
myininaya
  • myininaya
one sec
anonymous
  • anonymous
:)
myininaya
  • myininaya
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anonymous
  • anonymous
THank you so much
myininaya
  • myininaya
i'm glad it helped
myininaya
  • myininaya
oops i made a mistake on that first part one sec
anonymous
  • anonymous
yea i just caught it

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