FUZxxl
Reputation
1,849
Next privilege 2,000 Rep.
Edit questions and answers
 Apr29 accepted Is this lemma about the minimal distance of two lines true? Apr28 asked Is this lemma about the minimal distance of two lines true? Apr25 awarded Enthusiast Apr12 comment Solving a scrambled $3 \times 3 \times 3$ Rubik's Cube with at most 20 moves! I would suggest looking on Wikipedia And also here Apr6 comment Please help me to show, that $(\ln x)'=\frac1 x$ Thank you. Great answer. Apr6 accepted Please help me to show, that $(\ln x)'=\frac1 x$ Apr6 comment Please help me to show, that $(\ln x)'=\frac1 x$ @Arturo Magidin: Thank you very much. Apr6 comment Please help me to show, that $(\ln x)'=\frac1 x$ @quanta: Please don't cheat. I want to get an answer I can use to understand the derivation. But anyway, thanks for the definition. Apr6 comment Please help me to show, that $(\ln x)'=\frac1 x$ Ah... Okay. And how to show, that $\lim_{\delta\to\infty}\ln\left(1-\frac1{x\delta}\right)^\delta = x^{-1}?$ Apr6 comment Please help me to show, that $(\ln x)'=\frac1 x$ @Fabian: In our school, we are doing l'Hôpital in grade 11, I don't want to wait that long ;) Apr6 comment Please help me to show, that $(\ln x)'=\frac1 x$ @Arturo Magidin: Yes. Sorry. Got confused by myself. Apr6 asked Please help me to show, that $(\ln x)'=\frac1 x$ Apr4 comment Common algorithm with an order of Θ(2^n) Hm... I'm not a mathematician. Thank you. Apr4 answered Common algorithm with an order of Θ(2^n) Apr4 revised wave equation and superposition Texify images Apr4 suggested approved edit on wave equation and superposition Mar30 accepted Find a closed form for this sequence: $a_{n+1} = a_n + a_n^{-1}$ Mar29 comment Find a closed form for this sequence: $a_{n+1} = a_n + a_n^{-1}$ That's still only an asymptotic. Mar29 asked Find a closed form for this sequence: $a_{n+1} = a_n + a_n^{-1}$ Mar23 revised factorization of a^n+1? Encapsulate $\LaTeX$ into dollars.