SOLUTION: Determine if the following series are convergent of divergent. If the series is geometric find the sum as well: [cos(n*pi/3)] / n factorial at n =1 to infinity Thank you s

SOLUTION: Determine if the following series are convergent of divergent. If the series is geometric find the sum as well: [cos(n*pi/3)] / n factorial at n =1 to infinity Thank you s

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Question 579910: Determine if the following series are convergent of divergent. If the series is geometric find the sum as well:
[cos(n*pi/3)] / n factorial
at n =1 to infinity

Thank you so much!

Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
It is not a geometric series.
, and (n factorial) grows without bounds , so converges to zero
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