Suppose that the radius of convergence of the power series   cn xn is R.     What is the radius of convergence of the power series   cn x3n

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.1: Infinite Sequences And Summation Notation
Problem 33E
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Suppose that the radius of convergence of the power series

  cn xn is R.
 
 

What is the radius of convergence of the power series

  cn x3n
 
 

?

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