Well, I had a summer homework packet that I put off, and now I really need to finish it fast... Anyway, I know how summation notation works, but in my packet there's a problem that says "Find Each summation" and where there's usually a number over the sigma letter, there's an infinity symbol. I never learned this last year, so I don't know what to do. Help?
Hello !
Hmmm I have 2 possibilities for this... The second one being unsure, it's the first time
1st :
Note that
Formulae :
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2nd : you gotta be used to summations, so don't read if you don't want to... The first part is largely enough
We'll try to write this sum in the form
Change i into t+1.
i-2 --> t-1
i-1 --> t
i=1 --> t=0
i=n --> t=(n-1)
Then
Thus
Changing i again :
By applying the formula above.
And so on... it's much longer than the normal method
Edit : no wonder I'm too late -___-' what an idea to make such a useless stuff lol !
well, if you want to find out about summation rules, googling "summation rules" is always a good idea. here is a page i found by doing that: http://www.math.ucdavis.edu/~kouba/C...Summation.html
otherwise you can check well known sources like wikipedia.org, and maybe it is on purplemath