Question

∑[i=1,15,Fn=5i-1]

Answer 1

599

Answer 2

Sum of the arithmetic series?

Answer 3

use this formula
(1/2)*a*(f+1)^2-(1/2)*a*(f+1)-(1/2)*a*i^2+(1/2)*a*i-c

Answer 4

i is initial f is final
a is 5 c is 1

Answer 5

Correct answer was 585; but I appreciate your help! :)

Answer 6

a crap i see what i did wrong :P I am so sorry

Answer 7

sum(5*i-1, i = 1 .. 15)

Answer 8

(5/2)*(f+1)^2-(7/2)*f-7/2-(5/2)*i^2+(7/2)*i

Where i is initial (1) f is final (15)

Answer 9

Don't worry about it- Much better than I can do. I don't understand anything involving series notation. Beauty of being an online student!