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Dec
9
asked Liapunov Function for a Differential Equation
Oct
8
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?
Aug
1
awarded  Yearling
Jul
19
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.
Jun
26
awarded  Popular Question
Jun
10
awarded  Popular Question
Jun
9
awarded  Disciplined
May
18
awarded  Constituent
May
13
comment
@AlexBecker Really well thought out policies.:-)
May
10
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.
May
10
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. :-)
May
9
wiki
May
7
awarded  Caucus
Apr
21
awarded  Nice Answer
Apr
14
comment Factoring a long expression in the form $(a+b)^3 + (c - b)^3 - (c+b)^3$
@pen you have $(c-b)^3 - (c+a)^3$.
Apr
14
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.
Mar
28
revised The ratiotest, why can't it be bigger than one?
edited tags
Mar
25
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.
Mar
18
comment Solve the differential equation
If $x=Py$, then $y=$?
Mar
18
comment Modular homework problem
I too downvoted for the same reason as Tobias.