Finding the Interval for Power Series Summation of x^(n)/[2^(n)*n^(4)]

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SUMMARY

The discussion focuses on determining the interval for the power series summation of the function x^(n)/[2^(n)*n^(4)]. The radius of convergence is established as 2 using the ratio test. The interval of convergence is confirmed to be -2 ≤ x ≤ 2, derived from the inequality -1 < x/2 < 1, which simplifies to -2 < x < 2.

PREREQUISITES
  • Understanding of power series and convergence
  • Familiarity with the ratio test for series
  • Basic algebraic manipulation of inequalities
  • Knowledge of limits and infinity in calculus
NEXT STEPS
  • Study the application of the ratio test in various series
  • Explore the concept of radius and interval of convergence in power series
  • Investigate other convergence tests such as the root test
  • Learn about the implications of convergence on function behavior
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Students and educators in calculus, mathematicians focusing on series analysis, and anyone interested in understanding power series convergence.

frasifrasi
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For summation from 1 to infinity of x^(n)/[2^(n)*n^(4)]
- I get the radius is 2 by ration test, but how do I get the interval, just by pluggin in?
 
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anyone? : )
 
well it's just -1<x<1

so your R is 2, but before you had x/2

-1<x/2<1

-2<x<2 (equal to)
 

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