- #1
theintarnets
- 64
- 0
I forgot how to do summations... I've been googling all day, but I can't find resources good enough for the types of problems I have. If anyone can provide me with some resources, I'd really appreciate it.
10087
Ʃ6n+8
i=4
I'm just going to call that S
Ʃ of i = 1 to n is n(n+1)/2
I know I can separate the two terms:
S6n + S8
And then pull the constants out?
6n*S1 + 8S1
But can I use 1 as the new constant or do I have to use 4 since that is the index? Do I just multiply 4 by 10087? Or 1 by 10087 and then subtract... something? I don't know, the index of 4 is really throwing me off.
Homework Statement
10087
Ʃ6n+8
i=4
I'm just going to call that S
Homework Equations
Ʃ of i = 1 to n is n(n+1)/2
The Attempt at a Solution
I know I can separate the two terms:
S6n + S8
And then pull the constants out?
6n*S1 + 8S1
But can I use 1 as the new constant or do I have to use 4 since that is the index? Do I just multiply 4 by 10087? Or 1 by 10087 and then subtract... something? I don't know, the index of 4 is really throwing me off.