Top network posts

• 68 Why do I see a saddle in this picture of a computer screen?
• 29 Can we use symmetry rules in improper integrals?
• 14 Simplify $y = \frac{1-2\exp(-x)\cos(x)+\exp(-2x)}{1+2\exp(-x)\sin(x)-\exp(-2x)}$
• 6 Help summing the telescoping series $\sum_{n=2}^{\infty}\frac{1}{n^3-n}$.
• 6 Question about evaluating a Definite Integral w/ U-Substitution
• 5 Use L'Hospital's rule to find $ \lim \limits_{x \to 0} \left( \frac{ \tan\beta x - \beta \tan x}{\sin \beta x - \beta \sin x} \right) $
• 5 If $\alpha=\sqrt[3]{2}$ and $p,q,r\in\mathbb{Q}$ then show $p+q\alpha+r\alpha^2$ is a subfield of $\mathbb{C}$
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