For which values of p does this sum converge?

  • Thread starter Thread starter Jacob_
  • Start date Start date
  • Tags Tags
    Sum
Click For Summary
SUMMARY

The convergence of the sum \(\sum_{k=10}^{\infty} \frac{1}{k^p (\ln(\ln(k)))^p}\) is determined by the value of \(p > 0\). The series converges when \(p > 1\) due to the comparison with the p-series \(\frac{1}{k^p}\), which converges under the same condition. The logarithmic term \((\ln(\ln(k)))^p\) does not affect convergence for large \(k\) since it remains finite and does not dominate the behavior of the series. Therefore, the critical threshold for convergence is established as \(p > 1\).

PREREQUISITES
  • Understanding of p-series convergence criteria
  • Familiarity with logarithmic functions, specifically \(\ln\) and \(\ln(\ln)\)
  • Knowledge of comparison tests in series convergence
  • Basic calculus concepts related to infinite series
NEXT STEPS
  • Study the properties of p-series and their convergence criteria
  • Learn about the comparison test for series convergence
  • Explore the behavior of logarithmic functions in asymptotic analysis
  • Investigate advanced topics in series convergence, such as the ratio test and root test
USEFUL FOR

Mathematics students, particularly those studying calculus or real analysis, educators teaching series convergence, and anyone interested in advanced mathematical series and their properties.

Jacob_
Messages
1
Reaction score
0

Homework Statement


For which p > 0 does the sum
[itex]\displaystyle\sum\limits_{k=10}^∞ \frac{1}{k^p(ln(ln(k)))^p}[/itex]
converge?


Homework Equations


1/k^p converges for p > 1.


The Attempt at a Solution


I'm not really sure where to start. I want to use a comparison test with the p-series, but ln(ln(k)) < 1 for k < e^e, so the equation isn't greater or less than 1/k^p for the entire sum interval.
 
Physics news on Phys.org
Jacob_ said:

Homework Statement


For which p > 0 does the sum
[itex]\displaystyle\sum\limits_{k=10}^∞ \frac{1}{k^p(ln(ln(k)))^p}[/itex]
converge?


Homework Equations


1/k^p converges for p > 1.


The Attempt at a Solution


I'm not really sure where to start. I want to use a comparison test with the p-series, but ln(ln(k)) < 1 for k < e^e, so the equation isn't greater or less than 1/k^p for the entire sum interval.

Convergence of the series is determined only by the asymptotic behavior of the terms in the sum, for any finite k, the term is finite, and therefore irrelevant
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 25 ·
Replies
25
Views
3K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 2 ·
Replies
2
Views
2K
Replies
8
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K