Question

Expand And Simplify
4
(sigma) n^2/2
n=0

I understand how to do this, but does the N act as a variable starting from one, and expanding to 4?

Answer 1

replace n by 0, then 1, then 2, then 3, then 4

Answer 2

oh and put plus signs between the terms

Answer 3

Okay, thank you :).

Answer 4

\[\sum_{k=0}^n=a_0+a_1+a_2+...+a_n\]
\[\sum_{n=0}^4\frac{n^2}{2}=\frac{0^2}{2}=\frac{1^2}{2}+\frac{2^2}{2}+...\]

Answer 5

typo there
\[\sum_{n=0}^4\frac{n^2}{2}=\frac{0^2}{2}+\frac{1^2}{2}+\frac{2^2}{2}+...\]