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OpenStudy (anonymous):
Does the series -2/5 + 4/15 - 8/45 + 16/135 - 32/405+... converge or Diverge. If the series converges what is the sum.
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OpenStudy (asnaseer):
can you spot a pattern in how you get from one term to the next?
OpenStudy (anonymous):
@asnaseer the top doubles and the bottom changes by 30
OpenStudy (asnaseer):
not quite - but close. look carefully at the numerators: -2, 4, -8, 16, -32, ... what do you need to do to each term to get to the next one?
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