(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

[tex]\sum(\frac{1}{\sqrt{ln k +2}-\sqrt{ln k -2})}^{k}[/tex]

as k [tex]\rightarrow[/tex][tex]\infty[/tex]

2. Relevant equations

Root test: (a_{k})^{1/k}

3. The attempt at a solution

(a_{k})^{1/k}= (\frac{1}{\sqrt{ln k +2}-\sqrt{ln k -2})

does it equal 0? since 1/[tex]\infty[/tex] = 0

but its [tex]\infty[/tex] - [tex]\infty[/tex] i would have to use l'HÃ´pital's rule right?

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# Homework Help: Test for conver

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