### Questions (10)

 5 is my argument for $\lim_{n\rightarrow\infty}(a_n) = 0$ given $a_n = \tan(n) (\frac{1}{e})^{n}$ correct? 3 Elegant solution for $\int {\frac{\cos(y)}{\sin^2(y)+\sin(y)-6}}dy$ 1 Likelihood for a random hash function not to be surjective 1 Is it formally correct to take the limit of infinitely many terms? 1 Is it true that everything that isn't linear is concave or convex (or both)?

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### Answers (3)

 0 Closed form of to calculate variation of Pascal's triangle 0 Can I use l'Hopital for $\lim_{n\rightarrow\infty}(a_n) = 0$ where $a_n = \tan(n) (\frac{1}{e})^{n}$ 0 Compute the distance between two elements in a ring

### Tags (23)

 0 real-analysis × 8 0 ring-theory × 2 0 limits × 4 0 sequences-and-series 0 computer-science × 3 0 stirling-numbers 0 discrete-mathematics × 3 0 hash-function 0 functions × 2 0 indefinite-integrals

### Bookmarks (3)

 1 Prove that a graph is a planar embedding using Kuratowski's Theorem or prove that none exists. 1 Likelihood for a random hash function not to be surjective 0 Compute the distance between two elements in a ring

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