Recent content by tauon

Hi. This might be very late now, but I didn't check this thread since I got the solution. :p In case someone runs into it in the future, this is the derivation I used Oh, and the excerpt is from "Fundamentals of Astrodynamics" (authors Roger Bate, Donald Mueller, and Jerry White) the 1971 edition.

Never mind. I got the derivation. I also found out I am blind/can't read.

Homework Statement I do not understand how the authors got the time derivative of equation 1.5-4 in the form given at 2.5-2. Homework Equations The Attempt at a Solution \frac{d}{dt}\frac{p}{1+e...

Pretty much every proof of this I've seen uses the axiom of countable choice at some part or another, and I never got why, since it's pretty cumbersome. Here's the sketch of a proof I wrote for the "fact" that a countable union of countable sets is countable: Let \ P:=\{\pi\in\mathbb{N}|\ \pi \...

well, everything. sufficient knowledge so that I may say I know "periodic functions theory"... but, I was somewhat afraid of that... it seems I'll have to dig through the library for what I need. Thank you for your input. :] I already covered Fourier series last year. I was wondering if...

Hello, I know I am asking for advice about a very specific topic - periodic functions, almost periodic functions and quasi-periodic functions. I was hit by an idea and I need to know a few things more comprehensively about this topic !?~ :] I am aware that "periodic functions etc." isn't a...

thanks a lot for these examples. after looking into them, from here to there, I eventually found that maybe analytic number theory or something similar is more "suitable" for me. an idiot as I was I didn't think of approaching number theory as from other domains; that would've helped a lot and...

Speaking of Number Theory. It's one of the courses I have to take but I simply loathe. I already flunked it because I couldn't get motivated enough to study for it. How does one find the necessary excitement for it, what are some interesting results in number theory? And by interesting I mean...

k, sense of humor I got it (and I was apparently doing it without noticing myself... heh, I like being distracted - not so self-conscious anymore during those times). anyway, my forum adventure ends here. thanks again for them advices and tips everywun. :P

second date in the works. thanks for the tips guys and gurlz. :]

I kinda do... that`s why I`m fretting about it... thing is, 2 weeks past since then because, an idiot as I am... arghhh, nvm... does time "cool" things down or do I still have a shot... :S

man, my stomach is doing funny things to me... thanks for the advice. I`ll try to put it in practice...ermmm, nope - I WILL do it... I hope. >< I`m not sure if it was funny...tbh woah... kiss her next time? just like that? o.0 eeekkk, how to pull out a "next time" now... : | thx.

that`s the thing... I can`t tell... I`m thinking that maybe it`s just me wanting her to like me, so I`m kinda... just seeing things... >_<

...she likes me? If she stared a little into my eyes and I in hers does that mean she likes me a bit or do some girls just enjoy looking at someone`s eyes? if she smiled when I said something funny does that mean she likes me, or just that she enjoys a nice joke? if she put her arm...

This part of PF is definitely outside my comfort zone (why did I post here anyway)... but we don`t know each other so what the heck. It`s not looks, it`s apparently my personality... I`ve found that the more people know me (like the "real" me) the more they think I am weird, and they don`t...