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 Dec9 asked Liapunov Function for a Differential Equation Oct8 comment Solve differential equation with variation of parameters To the point of being dumb and repetitive, may I ask why this constraint always bears fruit? Aug1 awarded Yearling Jul19 comment $\int_0^\infty \frac{\cos(tx)}{(x^2 - 2x + 2)}\,\mathrm{d}x$ for $t$ real @sos440 What can I do to get as good as you at recognizing integrals? I have tried everything except changing my name to sos450. Jun26 awarded Popular Question Jun10 awarded Popular Question Jun9 awarded Disciplined May18 awarded Constituent May13 comment @AlexBecker Really well thought out policies.:-) May10 comment Why is 'abuse of notation' tolerated? @Korgan I have been in the same boat as you are and have tried to use completely correct and well-defined notation as long as possible. Believe me, in a course as simple as basic analysis, I was not able to proceed much further than 6-7 sections without having to write stuff too much tediously. I instead gave up and adopted the loose notations. May10 comment @TMM By as cool as an ice, I meant, I am quite resistant to personal insults and less likely to be depressed by the site. I share a good camaraderie with quite a lot of members on chat. I have till now being more of an active participant in chat rather than main. If/when I am elected a moderator, I will of course extend my focus to main. :-) May9 wiki May7 awarded Caucus Apr21 awarded Nice Answer Apr14 comment Factoring a long expression in the form $(a+b)^3 + (c - b)^3 - (c+b)^3$ @pen you have $(c-b)^3 - (c+a)^3$. Apr14 comment Factoring a long expression in the form $(a+b)^3 + (c - b)^3 - (c+b)^3$ Internet problems I have so cannot come on chat. Heed the first comment. Mar28 revised The ratiotest, why can't it be bigger than one? edited tags Mar25 comment CSB inquality: is $\|x\|^2\|y\|^2 - \langle x,y \rangle^2$ a square in any obvious way? @PeterTamaroff Try that without the double negative. Mar18 comment Solve the differential equation If $x=Py$, then $y=$? Mar18 comment Modular homework problem I too downvoted for the same reason as Tobias.