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OpenStudy (anonymous):
8. Find the sum of the infinite geometric sequence. 1 -1/5 + 1/25 - 1/125 . . .
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OpenStudy (paxpolaris):
\[\Large \sum_{n=0}^{\infty}\left( -\frac 15 \right)^n\]
OpenStudy (anonymous):
= 5/4?
OpenStudy (paxpolaris):
no, less then 1 .... 5/6
OpenStudy (paxpolaris):
if it converges... \[\Large\sum_{n=0}^{\infty}ar^n = {a \over 1-r}\]
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