Question

need help with sequences/series question calc II :)

Answer 1

find a function f(k) such that 2, -4, 6, -8, 10 are the first five terms for \[\sum_{k=1}^{5}f(k)\]

Answer 2

f(k)=((-1)^(k+1))(2k)

Answer 3

thanks :)

Answer 4

norman 7, how would I change the equation if it goes from k=0 to k=4 instead of from 1 to 5? Thanks :)

Answer 5

@norman7

Answer 6

sorry I'm kind of bad at series and sequences :(

Answer 7

((-1)^n)(2+2k)

Answer 8

(-1)^k is what i meant

Answer 9

okay thanks so much :)