anonymous
  • anonymous
How do you solve this? (Explain please)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
\[\sum_{n=1}^{3}\frac{ 1 }{ n ^{3} }\]
anonymous
  • anonymous
okay so basically in this problem you have to add the values of \[(1/1^3) + (1/2^3) + (1/3^3)\]
anonymous
  • anonymous
you see that n =1 one at the bottom of the sigma

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anonymous
  • anonymous
that means you start with 1
anonymous
  • anonymous
Oh does the three on the top mean you end with 3?
anonymous
  • anonymous
yes exactly, if it was say 6 you would keep adding the equations with variables up to 6
anonymous
  • anonymous
if at the bottom it said n=3 you would start at three, its a rather hard concept to wrap your head around do you get it?
anonymous
  • anonymous
Oh okay. So the answer would be 195/162?
anonymous
  • anonymous
fun fact if instead of a \[\sum_{?}^{?} you see a \prod_{?}^{?} \it means multiply \]
anonymous
  • anonymous
instead of add
anonymous
  • anonymous
dont know havent worked it out give me a sec
anonymous
  • anonymous
Alright
anonymous
  • anonymous
strange i got 251/216
anonymous
  • anonymous
Did u add 1 + 1/6 + 1/27?
LynFran
  • LynFran
thats correct @Jdosio
anonymous
  • anonymous
no you have to add 1+ 1/8 + 1/27
anonymous
  • anonymous
Oh whoops! I messed up on that. Thanks!
anonymous
  • anonymous
yep no problem :D

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