qoqosz
Reputation
2,354
Top tag
Next privilege 2,500 Rep.
Create tag synonyms
 Nov 4 answered Show that if $x>0$, then $\ln(x)\geq 1-\frac{1}{x}$ Nov 2 comment Integration in n-spherical coordinates Thanks, I've already got an answer on physics.SE: physics.stackexchange.com/questions/83103/… Oct 31 asked Integration in n-spherical coordinates Oct 13 comment Divergence in spherical coordinates @user8268 So if $\vec F$ is defined as: $F^\alpha = \frac{\partial f (u(r, \theta, \phi), \ldots)}{\partial (\nabla_\alpha u)}$ and I compute $\nabla_\alpha u$ as $(\partial_r u, \frac{1}{r} \partial_\theta u, \frac{1}{r \sin \theta} \partial_\phi u)$ than which formula for $\nabla \cdot \vec{F}$ should I use? The first one? Oct 13 asked Divergence in spherical coordinates Aug 9 awarded Necromancer Jun 26 comment Solving the integral $\int_{0}^{\infty} \frac{\sin{x}}{x} \ dx = \frac{\pi}{2}$? @André indeed, thanks. Jun 26 revised Solving the integral $\int_{0}^{\infty} \frac{\sin{x}}{x} \ dx = \frac{\pi}{2}$? fixed typo May 24 comment Improper integral and special functions @RaymondManzoni thank you. May 24 accepted Improper integral and special functions May 24 asked Improper integral and special functions May 17 awarded Yearling May 14 awarded Nice Answer Feb 8 awarded Nice Answer Sep 16 awarded Revival Sep 16 answered Find the functions family that satisfies the inequality $\int_0^1 \frac{dx}{1+f^{2}(x)} <\frac{f(1)}{f'{(1)}}$ Aug 20 answered Solving the integral $\int_{0}^{\infty} \frac{\sin{x}}{x} \ dx = \frac{\pi}{2}$? Jul 26 comment Sum equals integral Thank you for your answer. These references are very helpful. Jul 26 accepted Sum equals integral Jul 26 awarded Nice Question