query: Showing that $\sum_{n=2}^\infty \frac{2}{n^2-1}$ is convergent
positive_passages.docid: 24373
positive_passages.text: Hint on computing the series $\sum_{n=2}^\infty \frac{1}{n^2-1}$.
negative_passages.docid: 62884
negative_passages.text: Prove the series $ \sum_{n=1}^\infty \frac{1}{(n!)^2}$ converges to an irrational number
negative_passages.docid: 105971
negative_passages.text: Convergence of $\sum \limits_{n=1}^{\infty}\sqrt{n^3+1}-\sqrt{n^3-1}$
negative_passages.docid: 28587
negative_passages.text: Show that $\sum\limits_{n=1}^\infty \frac {\sqrt{a_n}}{n}$ converges if $\sum\limits_{n=1}^\infty{a_n}$ does provided that $a_n>0$
negative_passages.docid: 63612
negative_passages.text: Determine convergence of $\sum_{n=1}^{\infty}a_n$
negative_passages.docid: 149360
negative_passages.text: convergence of $ \sum_{k=1}^\infty \sin^2(\frac 1 k)$
negative_passages.docid: 41868
negative_passages.text: Radius of Convergence - $\sum_{n=1}^{\infty}2^n x^{n^2}$
negative_passages.docid: 82532
negative_passages.text: A community project: prove (or disprove) that $\sum_{n\geq 1}\frac{\sin(2^n)}{n}$ is convergent
negative_passages.docid: 25503
negative_passages.text: Convergence of $\sum_{n=1}^\infty \frac{\sin^2(n)}{n}$
negative_passages.docid: 145926
negative_passages.text: To show that $\sum a_nb_n$ is absolutely convergent
negative_passages.docid: 65993
negative_passages.text: Does $\sum_{k=1}^\infty\frac1{k^n}$ converge for $\Re(n)=1,\Im(n)\ne0$?
negative_passages.docid: 76050
negative_passages.text: Test for convergence of the series $\sum_{n=1}^{\infty}\frac{n}{\sqrt{n^2 +1}}$
negative_passages.docid: 7198
negative_passages.text: How can I show whether the series $\sum\limits_{n=1}^\infty \frac{(-1)^n}{n(2+(-1)^n)} $ converges or diverges?
negative_passages.docid: 142057
negative_passages.text: Prove that if $\sum_{n=1}^\infty a_n$ converges then $\sum_{k=1}^\infty A_k$ converges
negative_passages.docid: 9921
negative_passages.text: Convergence of $\sum_{n=1}^\infty\frac{n}{(n+1)!}$
negative_passages.docid: 125341
negative_passages.text: Does $\sum_{n=1}^{\infty} \frac{1}{n+1}$ converge?
negative_passages.docid: 12480
negative_passages.text: Convergence of $\sum_{n=1}^{\infty} \frac{\frac{1}{2}+(-1)^n}{n}$