Power Series Interval of Convergence

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SUMMARY

The discussion focuses on constructing a power series with a radius of convergence equal to π. The participant attempted to use the series x^n*sin(n) but did not achieve a valid solution. The conversation emphasizes the importance of applying the ratio test or root test to manipulate the radius of convergence from known power series to meet specific requirements.

PREREQUISITES
  • Understanding of power series and their convergence properties
  • Familiarity with the ratio test and root test for series convergence
  • Basic knowledge of trigonometric functions and their series representations
  • Experience with manipulating series to achieve desired convergence characteristics
NEXT STEPS
  • Research methods to modify the radius of convergence in power series
  • Study the application of the ratio test in detail
  • Explore the root test and its implications for series convergence
  • Investigate specific examples of power series with known radii of convergence
USEFUL FOR

Mathematics students, educators, and anyone involved in series analysis or convergence studies will benefit from this discussion.

harrietstowe
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Homework Statement


I need a power series with a radius = pi. (So when you do the ratio test on this power series you get pi)


Homework Equations





The Attempt at a Solution


I tried x^n*sin(n) and thought of stuff like that but couldn't come up with a working power series
 
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Look at the ratio or root test and try to figure out how to change the radius of convergence of a power series, so that you can start with a power series whose radius of convergence you know, and turn it into one that solves your problem.
 

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