The sum is an arithmetic series. Do you know how to get the closed form of an arithmetic series?
Hi.
Like the topic says I need help getting a value from anywhere on a graph I made from a Sigma formula.
The formula goes like this:
0
(Σ 50n)+100
n=9
Giving a start value off 100 and a final value off 2350.
Each point on the graph would be the formula given with n=0-9
Now comes the part where I have no idea what to do, or how to do it. I need to be able to find any value on that graph.
So if I needed to find the value for 5,5 or 7,25 , what would I have to do?
-Pus
The point Prove it was trying to make is that, since this is an arithmetic series (with 100 added), its sum, up to "n", is . To evaluate that at non-integers, such as 5.5 or 9.5, just use those numbers for n. When n= 5.5 that is .