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mely2668
14.05.2021 •
Mathematics
Consider the following series.
1/4 + 1/8 + 1+12 + 1/16 + 1/20
Required:
Determine whether the geometric series is convergent or divergent.
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Ответ:
The series is convergent.
Step-by-step explanation:
1/4 + 1/8 + 1+12 + 1/16 + 1/20
In each term, the numerator stays 1, while the denominator is multiplied by 4. Thus, the series is given by:
Convergence test:
We compare the sequence of this test,
, with a sequence
.
If
, the series is convergent. So
As the limit is different of zero, the series is convergent.
Ответ: