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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
11 Nov 2021

Given information

Given a series,   which converges when   and diverges when  .

Step-by-step explanation

Step 1.

The given series,     converges when 

 

Thus, the radius of convergence for the series  is at least 4.

 

That means the series is at least convergent when       

 

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