Question

sigma notation

Answer 1

\[\sum_{n=1}^{50} 3n\]

Answer 2

need someone to explain how to do this

Answer 3

that is the sum of 50 numbers
the first number is 3(1) = 3
then 3(2) = 6
then 3(3) = 9
and so on to 3(50) = 150
so it is the sum of 3 + 6 + 9 + ... + 150

Answer 4

isn't there a formula, so u wouldn't have to go all the way up to 50 ?

Answer 5

maybe, but my brute force script just told me it was 3825
sometimes computers are useful

Answer 6

\[\sum_{n=1}^{82} 2(n-1)\]