Write 3Σk = 0 (- 1/2)^k in expanded form and then find the sum

[From: ] [author: ] [Date: 12-07-12] [Hit: ]

d. 1 + 1/2 - 1/4 -1/8; - 5/8-well, it looks like its D...but it should be -1/2 and +1/4.......

3
Σ
k = 0

a. - 1/2 - 1/4 -1/8; - 7/8
b. 1 - 1/2 - 1/4 -1/8; 1/8
c. - 1/2 + 1/4 -1/8; 3/8
d. 1 + 1/2 - 1/4 -1/8; - 5/8

well, it looks like it's D...but it should be -1/2 and +1/4. And the final answer should be positive

keywords: and,Sigma,find,form,sum,in,the,expanded,Write,then,Write 3Σk = 0 (- 1/2)^k in expanded form and then find the sum

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