SOLUTION: Determine whether the infinite geometric series converges. If the series converges, determine the limit. 72 - 36 + 18

SOLUTION: Determine whether the infinite geometric series converges. If the series converges, determine the limit. 72 - 36 + 18 - 9 + ...

Question 1140695: Determine whether the infinite geometric series converges. If the series converges, determine the limit.
72 - 36 + 18 - 9 + ...
Answer by Edwin McCravy(20056) (Show Source): You can put this solution on YOUR website!

An infinite geometric series with common ratio r, |r| < 1 converges to .

a = first term = 72
r = common ratio = any term over previous term = -1/2

So it converges to 

Edwin

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