Question

How do you solve this? (Explain please)

Answer 1

\[\sum_{n=1}^{3}\frac{ 1 }{ n ^{3} }\]

Answer 2

okay so basically in this problem you have to add the values of \[(1/1^3) + (1/2^3) + (1/3^3)\]

Answer 3

you see that n =1 one at the bottom of the sigma

Answer 4

that means you start with 1

Answer 5

Oh does the three on the top mean you end with 3?

Answer 6

yes exactly, if it was say 6 you would keep adding the equations with variables up to 6

Answer 7

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?

Answer 8

Oh okay. So the answer would be 195/162?

Answer 9

fun fact if instead of a \[\sum_{?}^{?} you see a \prod_{?}^{?} \it means multiply \]

Answer 10

instead of add

Answer 11

dont know havent worked it out give me a sec

Answer 12

Alright

Answer 13

strange i got 251/216

Answer 14

Did u add 1 + 1/6 + 1/27?

Answer 15

thats correct @Jdosio

Answer 16

no you have to add 1+ 1/8 + 1/27

Answer 17

Oh whoops! I messed up on that. Thanks!

Answer 18

yep no problem :D