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Everything posted by paganinio

  1. Is there anyway to get the frequency of notes (from a midi or wav)? Through matlab or other softwares perhaps?
  2. Am I the only one that got tired of blue? I couldn't find the option to change it.
  3. My mouse had the same problem, it's most likely a problem from the mouse hardware. In my country (China), this problem is so common that someone actually wrote a software to fix it. But I assume you don't read Chinese, and wouldn't know how to use that software. There's most likely a program in English that does the same thing. Try searching for "double click fix". The best recommendation is to have your mouse repaired, or get a new one.
  4. Here I am, the first (and obviously the best) one to help, no edits (which means I won't edit it if there is an error, which gladly there isn't any) this guy already did 2a for ya, he's most likely to be correct, but since I'm not the one that solved it I can't make promises. I'll solve the rest. Yeah that's right, all of them. Why? Cos that's what I do, I solve problems (and brag about doing so). But don't be so happy just yet, because I'm also a mathematical minimalist (besides being a conversationalist, apparently). My solutions are neat and I won't explain them in words. Try to understand them yourself. The capital letter V denotes disjunction. start of solution 2b) ~(iVs) <=> ~iʌ~s 2c) ~(p⊙r) <=> ~[(pʌr)V(~pʌ~r)] <=> ~(pʌr) ʌ ~(~pʌ~r) 1) p: I am ugly. This is a false statement. q: My girlfriend is pretty. This is a true statement. [(p→q)ʌq]→p <=> [(0→1)ʌ1]→0 <=> [1ʌ1]→0 <=> 0 end of solution If you respect me, you should only go to Mathworld for more info. Hopefully your homework isn't due yet, is it? Feel free to notify me when you have any future discrete problems. I'm only being such a nice guy to impress my on-and-off girlfriend. She is always impressed when I solve something that has exclusive disjunction in it (this thread came close). I wonder why. I hope I'm not acting too cheesy, am I? This is actually the only unsolved problem on the Internet that I can solve.
  5. never seen this equation, does look important though, with all the Natural logarithms and big T's
  6. Strictly saying, everything is beyond a person's control. Let's say I expect to see the letter "R" on screen when I press the R key on my keyboard, but there is always a very small possibility that it won't show up. (Maybe the keyboard just happens to break at that moment.) Therefore, everything is a coincidence. But the word "coincidence" usually refers to something that is not likely to happen. Even in this case, coincidences happen about four times everyday in a person's life. edit: and in Jack Bauer's life, coincidences happen about 40 times everyday.
  7. Wrong, all the way from the first sentence to the last All this signals your lack of understanding basic mathematics concepts Basic geometry would tell you the area of a square and a circle. Just because a circle involves more calculation doesn't mean it's more complex or mysterious. I don't know how to explain but your way of thinking is reversed somehow. A point in mathematics doesn't occupy anything. A point is 1-dimension, a plane is 2-dimension. A plane doesn't occupy anything either. And irrational numbers are not as special as you think at all. They are as plain as rational numbers. If I were you I would worry about complex and imaginary numbers instead. Those are really mysterious to me.
  8. ok time for some humor Crazy Frog.
  9. Physics hasn't been a part of my life since I graduated from high school. Now I got this great game "The Incredible Machine: Even More Contraptions", I'm starting to remember it all. This game doesn't seem to require any calculations, but the player has got to understand how the things work, such as pulley, teeter-totter etc.. The game interface is a little similar to the Electronic Circuit Design and Simulation Software that I used. I'm just hoping someone professional has played this game and tells me what you think. Is it an accurate "simulator" for real life physics? P.S. There is a "glittery" ball that bounces forever. I don't think that's possible in real life. But other than that, everything in the game is believeable to me. Game is available for Mac too.
  10. What is college math like? I have a few questions. 1, Why is my favorite high school olympiad math contents not here? For example, where's number theory? Where's solid geometry? Where's trigonometry? Where's.....? Do they just disappear in college? 2, this is a much more important question. I FALL FOR HIGH SCHOOL MATH OLYMPIAD PROBLEMS. I enjoy the beauty of problem solving there. Am I likely to fall for college math too? You might say "Sure!" But I've read some college math books--they really look quite different. I suppose that every problem solving fan has a BRAIN LIMIT, and she will only feel comfortable when she's solving problems within that limit. No matter how bad she likes math in high school, she's not more likely than others to enjoy college math. How do you think? Should my math career end before college?
  11. oh my gosh it's not only 32, EVERY NUMBER is tricky here. Because...who would come up with things like that!?
  12. go to a bookstore and many books will do
  13. 1,I just remembered someone suggested that the only way of time travel be 'watching the past events without changing them'. I had thought what the difference is between 'watching past events and changing past events'. It might make sense to me now 'cause if you just watch it history won't be changed. But when you 'see' something photons already go into your eyes so you actually will have changed them as well. 2,Should time travel be true in the future(and in my sci-fi book written 2 years ago), some elite 'Time Soldiers' with hard training are required. Such training may include 'Body getting used to Counter-clockwise Effect', for example when you travel through time, the water you have drunk will go all the way up to your mouth and so on.
  14. <SFN logo isn't scientific?> I just read on my textbook that you can't draw an atom like that with some circles in that shape. That kind of picture is very common to represent an atom but it does mislead readers, because ELECTRONS AREN'T MOVING AROUND IN CIRCLES.
  15. why on earth do they PAY for a forum license.
  16. IMO bbc is just a boring-media-producing company though some of their shows are okay
  17. I just started to learn using TeXniC, it bothers me a lot, it's complex
  18. you are right but calling them metal and non-metal is fine
  19. in this way there may have been aliens around us for years (Superman fanfiction)
  20. on the homepage of SFN, I clearly see that we have 3121 members, but only 1 member's birthday is today. of course there are many users that didn't enter their birthdays to their profiles, but this number is still very impossible. could anyone give a mathemetical explanation?
  21. I've been away from SFN for over 2 months, and the poll on the homepage is still this one?? what happened?
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