Posted by **Todd** on Sunday, December 16, 2012 at 8:38pm.

Find the sum of each infinite series, or state that the sum doesn'nt exist

1/7+5/14+25/28+

- Math 12th grade -
**Reiny**, Sunday, December 16, 2012 at 10:30pm
(5/14) ÷ (1/7) = 2.5

(25/28)÷(5/14) = 2.5

From the first three terms I will assume that this is a geometric series with r = 2.5

since r > 1, it will diverge, thus it will not have a sum that can be calculated.

The sum will be infinite.

- Math 12th grade -
**ashley **, Tuesday, December 18, 2012 at 10:19am
cucumbeer

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