Question 1135686
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8 = 2^3
27 = 3^3
64 = 4^3
125 = 5^3
and so on
In general, the last term n^3 indicates this pattern, as n is a whole number. The smallest n can be is n = 2. There is no upper limit on n, so it goes to infinity. 


Therefore, the summation notation we write is 
*[Tex \LARGE \displaystyle \sum_{n=2}^{\infty}n^3]
in terms of words, we would say 
"<font color=red>Summation of n cubed from n equals 2 to infinity</font>"


The use of summation notation written above is a compact way of writing 
2^3 + 3^3 + 4^3 + 5^3 + ... + n^3


The fancy E looking symbol is the uppercase greek letter sigma (representing "S" in "Sum")


As you can probably guess, the number below the sigma tells you where n starts and the number up top tells you where you end, which in this case it doesn't end. The stuff to the right of sigma is the general expression we're adding, which you can think of as a template.
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