Proving Convergence or Divergence of (k^1/2)*(ln k )/(k^3 +1) - Help Needed

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SUMMARY

The discussion focuses on proving the convergence or divergence of the series defined by the expression (k^1/2)*(ln k)/(k^3 + 1) as k approaches infinity. Participants suggest using comparison tests and limit comparison tests, emphasizing the hint that ln(k) is less than k. The consensus is that further exploration of comparison methods is necessary to establish the behavior of the series definitively.

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raycao88124
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(k^1/2)*(ln k )/(k^3 +1)
how to prove it con or div?
i tried comparison, limit comparison, etc... but just don't know how to prove it..
please help...
 
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oh, from k=1 to +inf
 
Hint: \ln{k} < k. What comparisons have you tried? Try some more.
 

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