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Power Series Interval of Convergence

  • #1

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
 

Answers and Replies

  • #2
352
0
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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