## Search found 47 matches

- Sun Jun 07, 2009 1:33 pm UTC
- Forum: School
- Topic: Roommates for College
- Replies:
**34** - Views:
**4059**

### Re: Roommates for College

Put yourself down as a neat freak on the housing survey. Seriously, one of my roommates this year leaves all his foodtrash lying everywhere and it is extremely annoying. He also smells bad.

- Wed May 20, 2009 4:52 am UTC
- Forum: Mathematics
- Topic: Quick question on homeomorphism.
- Replies:
**10** - Views:
**1062**

### Re: Quick question on homeomorphism.

Let's say bijective. Would the fact that X and Y are compact be enough to make the inverse continuous, if the function is continuous?

- Wed May 20, 2009 4:34 am UTC
- Forum: Mathematics
- Topic: Quick question on homeomorphism.
- Replies:
**10** - Views:
**1062**

### Quick question on homeomorphism.

If you have two compact sets, X, Y, and a function from X to Y that is one to one, is that sufficient for the two sets to be homeomorphic?

- Tue Apr 14, 2009 3:17 am UTC
- Forum: School
- Topic: Boston University: Thoughts, Tips, Info?
- Replies:
**7** - Views:
**984**

### Re: Boston University: Thoughts, Tips, Info?

BU from what I could tell had a pretty solid math department, if that's an interest. The campus is fantastically placed and really beautiful as well. And yeah, get a Charliecard if you go. It sucks that Boston decided that students should pay (currently at OSU where the city buses are completely fre...

- Tue Mar 24, 2009 1:35 am UTC
- Forum: School
- Topic: being motivated to do work
- Replies:
**17** - Views:
**1864**

### Re: being motivated to do work

rubber314chicken wrote:I just stop doing homework because I can achieve the same without doing it.

If you can achieve the same without doing it, then why do you have a D when you said you could have an A?

- Sun Mar 22, 2009 4:38 am UTC
- Forum: School
- Topic: Allusions one should know because of school
- Replies:
**127** - Views:
**8805**

### Re: Allusions one should know because of school

OP: I'm actually very impressed that you not only managed to triple major in three sciences, but also had time and energy and motivation to read a large collection of books as well. In all honesty I feel a bit jealous; I spend quite a bit of time goofing off and having fun, and although I constantly...

- Tue Mar 10, 2009 1:08 am UTC
- Forum: School
- Topic: Hard work vs. Smartishness
- Replies:
**247** - Views:
**38307**

### Re: Hard work vs. Smartishness

If you refuse to do something (like homework) in school simply because you don't want to, imagine what the rest of your life is going to be like. Like it or not, you will be forced to do things you do not want to do throughout your whole life. If it's not your job, it's your bills. If you go homeles...

- Thu Mar 05, 2009 3:44 am UTC
- Forum: School
- Topic: Debate: Grades VS Knowledge
- Replies:
**61** - Views:
**6697**

### Re: Debate: Grades VS Knowledge

Do you mean high GPA? Or do you go to some absolutely insane college where 3.66 is low?

- Thu Jan 08, 2009 4:43 pm UTC
- Forum: Hardware
- Topic: The headphone jack on my laptop is crappy.
- Replies:
**5** - Views:
**1974**

### The headphone jack on my laptop is crappy.

Hey Hardware, hopefully this topic should go here. If not, I apologize. The headphone jack on my laptop is pretty much broken. It's loose in its housing, and when plugging headphones or speakers into it, it only plays out of one side. I don't really see a way to fix it, but I'd really like to have w...

- Thu Jan 08, 2009 3:37 am UTC
- Forum: Mathematics
- Topic: Prove that two curves in a square intersect
- Replies:
**76** - Views:
**6427**

### Re: Prove that two curves in a square intersect

Am I missing something? This doesn't seem too bad. Let f(x) be the curve from the top left to bottom right, and g(x) the other. Define h(x)=f(x)-g(x). The difference of two continuous functions is continuous, so h is continuous, h(0)=1, h(1)=-1, intermediate value theorem gives the existence of c su...

- Mon Dec 29, 2008 5:15 pm UTC
- Forum: School
- Topic: Your attendance at college or university - good or poor?
- Replies:
**44** - Views:
**5361**

### Re: Your attendance at college or university - good or poor?

Absolutely terrible. Two weeks into first quarter, I stopped going to my physics lecture because my teacher was so terrible. I also stopped going to economics, because that class was giving me no information. Even my math class, which was a hard course and used Spivak, I would skip sometimes because...

- Sun Dec 21, 2008 9:18 pm UTC
- Forum: Mathematics
- Topic: Mathematical Major?
- Replies:
**28** - Views:
**4391**

### Re: Mathematical Major?

Generally, a math major will end up taking a good number of physics or/and computer science courses, along with other subjects that have a heavy basis in math. It's not uncommon for someone with a PhD in math to end up at a software company, or teaching in the physics department. Actual math positio...

- Sun Nov 23, 2008 7:58 pm UTC
- Forum: Mathematics
- Topic: Integral Homework help please
- Replies:
**5** - Views:
**924**

### Re: Integral Homework help please

Think about the expression in terms of sine and cosine. Then use an appropriate substitution.

**Spoiler:**

- Sat Sep 13, 2008 1:40 pm UTC
- Forum: Mathematics
- Topic: ≡ sign
- Replies:
**24** - Views:
**3105**

### Re: ≡ sign

There's a bunch of different ways that's it's used, yeah. My own way of interpreting it (when it doesn't mean congruence) is that an equation that uses it is probably important. It's like a subtle way of putting the whole equation in bold and writing "(emphasis added)" after it.

- Fri Sep 12, 2008 1:39 pm UTC
- Forum: Mathematics
- Topic: Stupid Math Teachers?
- Replies:
**135** - Views:
**33059**

### Re: Stupid Math Teachers?

I learned sohcahtoa, which isn't hard to remember and is best when given a triangle, and also the unit circle definitions, which are more useful for applications other than just looking at a right triangle. Also, did you guys have to learn a bajillion trig identities? I could never remember the dou...

- Fri Sep 12, 2008 12:01 am UTC
- Forum: Music
- Topic: Fusion? In MY solar system?
- Replies:
**32** - Views:
**3238**

### Re: Fusion? In MY solar system?

Math metal and minimalist techno. speed metal ambient? How about Rosetta, or Darkspace? Rosetta is an American art metal band incorporating elements of post-hardcore, drone, post-rock and ambient, creating a sprawling, atmospheric sound similar to Neurosis, Isis[6], and even Stars of the Lid (all o...

- Mon Sep 08, 2008 9:56 pm UTC
- Forum: Mathematics
- Topic: Forgive me, but I have a dumb question.
- Replies:
**16** - Views:
**2079**

### Re: Forgive me, but I have a dumb question.

The limit of f(x) as x approaches 2, from either direction, is infinity. By the definition taught in my current course, there's a discontinuity at 2, for the reason that the limit does not exist. I'm replacing 4 with 2. Why does the limit not exist? You just said that it limits to infinity from bot...

- Fri Sep 05, 2008 6:55 pm UTC
- Forum: Mathematics
- Topic: I don't get probability...
- Replies:
**16** - Views:
**2241**

### Re: I don't get probability...

It seems like math is never sloppy...but then I look at probability and I just don't get it. If you flip a coin fifty times it almost never comes up with twenty-five heads and twenty-five tails. Probability doesnt seem accurate - even for estimation purposes - so why is it still taught in schools? ...

- Fri Sep 05, 2008 5:23 am UTC
- Forum: Mathematics
- Topic: Math Club entertainment/edutainment?
- Replies:
**17** - Views:
**2374**

### Re: Math Club entertainment/edutainment?

I actually just watched Pi, certainly a possibility. Lots of crazy, not quite enough real math. Loved the photography in it, lovely contrasty B&W. I think a good section of the membership have probably seen A Beautiful Mind and Good Will Hunting. Proof could be a good idea, I've seen the play- ...

- Fri Sep 05, 2008 5:03 am UTC
- Forum: Mathematics
- Topic: Graduate school!
- Replies:
**10** - Views:
**1972**

### Re: Graduate school!

If I may, could I ask a related question? What are the good graduate schools for math? Not even the top list of MIT/Hahvahd/Princeton/Chicago, but any school you'd consider a PhD in math from to be a worthy accomplishment.

- Fri Sep 05, 2008 4:18 am UTC
- Forum: Individual XKCD Comic Threads
- Topic: 0472: "House of Pancakes"
- Replies:
**185** - Views:
**41713**

### Re: "House of Pancakes" Discussion

Yes! Hell yes! I nearly died of laughter when I noticed the "House" in "House of Pancakes" was blue! I've never read this book, but I now feel inspired to read it. Is it worth the read? The first I even heard of the book was back when I was a little snot who browsed 4chan. There ...

- Tue Aug 26, 2008 12:51 am UTC
- Forum: Mathematics
- Topic: Something I just Noticed
- Replies:
**15** - Views:
**2075**

### Re: Something I just Noticed

Caboose wrote:And all prime numbers are one greater or one less than a multiple of four.

That's hardly dependent on primes. Every odd number has the same property.

- Mon Aug 25, 2008 5:21 pm UTC
- Forum: Mathematics
- Topic: What's the genus of this surface?
- Replies:
**6** - Views:
**1348**

### Re: What's the genus of this surface?

I have a similar question. Imagine a sphere, and imagine axes coming out of its centre. Now drill through the sphere along each axis. The genus of the resulting shape, I think, is 5. But that seems a little weird. Am I making a mistake? Assuming you puncture it along all three axes, I think it woul...

### Re: MIT

Man, I'm not really sure I understand the whole complaints about the MIT campus. I mean, yes, it's pretty ugly, but most buildings look fine on the inside. Meanwhile, they do have the Stata Center. The real beauty of the MIT buildings is the function over fashion ethic that's been evident up until S...

- Sat Aug 23, 2008 5:30 am UTC
- Forum: School
- Topic: High School Pranks
- Replies:
**684** - Views:
**88484**

### Re: High School Pranks

Ugh, no, don't introduce Kudzu to your school's football field...

- Thu Aug 21, 2008 6:14 pm UTC
- Forum: Mathematics
- Topic: Stupid Math Teachers?
- Replies:
**135** - Views:
**33059**

### Re:

I learned sohcahtoa, which isn't hard to remember and is best when given a triangle, and also the unit circle definitions, which are more useful for applications other than just looking at a right triangle. Also, did you guys have to learn a bajillion trig identities? I could never remember the dou...

- Sun Aug 17, 2008 5:37 am UTC
- Forum: Mathematics
- Topic: How do these punks do it?
- Replies:
**62** - Views:
**7416**

### Re: How do these punks do it?

Haven't you ever known anyone who gets amazing grades in all their classes without seeming to do much work? What's your explanation for this, if not talent? I strongly disagree with this having anything to do with talent, at least not necessarily. I didn't take many notes and did almost no homework...

- Fri Aug 15, 2008 1:51 am UTC
- Forum: Mathematics
- Topic: Number Theory
- Replies:
**7** - Views:
**1565**

### Re: Number Theory

As for a book, I was given John Stillwell's Numbers and Geometry for my birthday a few years ago. It's a hard book; really hard. Like, there are some exercises in there that I still have no idea how to do. But it also covers a bunch of number theory topics, uses no math beyond precalculus, and it's ...

- Wed Aug 13, 2008 3:20 pm UTC
- Forum: Mathematics
- Topic: What's wrong with this proof that no two numbers are equal?
- Replies:
**14** - Views:
**1955**

### Re: What's wrong with this proof that no two numbers are equal?

It's true that given two randomly picked numbers, (two truly, TRULY randomly picked numbers) the probability that they are equal is 0. But it could still happen. It's just infinitely unlikely. The problem with your proof is that it doesn't use randomly picked numbers, it uses any two given numbers. ...

- Mon Aug 11, 2008 2:38 am UTC
- Forum: School
- Topic: My school has hit a new low (subject selections)
- Replies:
**20** - Views:
**3055**

### Re: My school has hit a new low (subject selections)

Have you tried just sitting down with some of the people in charge and calmly explaining your request and why you feel it is important? It's all too easy to get caught up in how stupid you feel something is (I know I'm often guilty of this) and setting it up as a confrontation, when really you shou...

- Mon Jul 28, 2008 3:23 pm UTC
- Forum: School
- Topic: What to do over summer vacation?
- Replies:
**37** - Views:
**3775**

### Re: What to do over summer vacation?

What's wrong with a part time job? It's a good way for a high school kid to make money. Chances are he'll be working from the moment he graduates college for over 40 years, with no more summer breaks. Don't get a job. Enjoy your summers, they're some of your last chances to have carefree time while...

- Sat Jul 26, 2008 3:05 pm UTC
- Forum: Mathematics
- Topic: Unit Circle + Regular Polygon problem
- Replies:
**2** - Views:
**1019**

### Unit Circle + Regular Polygon problem

Take a unit circle, and inscribe a regular convex n -gon. Ignore the lines of the n -gon, leaving you with n equally spaced points. Pick one of these points, and draw lines from it to each of the other points. This leaves you with n-1 line segments. Prove that the product of the lengths of these lin...

- Tue Jul 08, 2008 3:56 am UTC
- Forum: Music
- Topic: Recommend one artist
- Replies:
**1018** - Views:
**272241**

### Re: Recommend one artist

The Angelic Process. They (were) a drone band from the US. The sound is really incredible, a massive wall of sound built up by lots of guitar. One of the two guys died recently. The only album of them that I have is Weighing Souls With Sand, but it's a damn good album and I recommend it wholehearte...

- Mon Jul 07, 2008 9:26 pm UTC
- Forum: School
- Topic: What to do over summer vacation?
- Replies:
**37** - Views:
**3775**

### Re: What to do over summer vacation?

What's wrong with a part time job? It's a good way for a high school kid to make money.

- Mon Jul 07, 2008 6:03 pm UTC
- Forum: School
- Topic: What to do over summer vacation?
- Replies:
**37** - Views:
**3775**

### Re: What to do over summer vacation?

Learn to juggle. Then learn some 3-ball tricks.

- Sun Jul 06, 2008 11:14 pm UTC
- Forum: School
- Topic: Social Breakdown
- Replies:
**14** - Views:
**2056**

### Re: Social Breakdown

Maybe the Western system sucks, but it sure beats the system that countries like China, Japan, and South Korea use. This year I read The Overachievers for my english class, and it talked about how competitive the systems they use over there are, how studies show that it causes kids to burn out most ...

- Sun Jul 06, 2008 11:07 pm UTC
- Forum: Mathematics
- Topic: Question About the Pythagorean Theorem
- Replies:
**40** - Views:
**7433**

### Re: Question About the Pythagorean Theorem

I think that maybe there isn't an "intuitive" proof for the Pythagorean Theorem. Maybe there never will be. And there certainly doesn't have to be; it was probably discovered by accident. Some guy might have been playing with right triangles, observed that this was true for all those that ...

- Tue Jul 01, 2008 4:48 pm UTC
- Forum: School
- Topic: tips for concentration and the ADD impaired
- Replies:
**9** - Views:
**1577**

### Re: tips for concentration and the ADD impaired

I came up against the problem of studying this year. I made resolutions at the start of this school year to get some experience in doing my homework, because I know it will help in college. Before this year, I was absolutely terrible when it came to doing my work. So by comparison this year, I did r...

- Tue Jul 01, 2008 4:35 pm UTC
- Forum: Mathematics
- Topic: Just another proof.
- Replies:
**10** - Views:
**1606**

### Re: Just another proof.

As for the question itself, nothing jumps out at me right away. Clearly the answer is at most 3(n-1), but surely you can do better than that. Could you explain? I'm seeing an upper bound of 3n. Just the standard way using "non-diagonal" planes. Use (n-1) in one "flat" direction ...

- Tue Jul 01, 2008 1:46 am UTC
- Forum: Mathematics
- Topic: Just another proof.
- Replies:
**10** - Views:
**1606**

### Re: Just another proof.

Edit: Sorry, I'm wrong.

Edit2: Have you tried the 2 dimensional equivalent of drawing lines through a square grid missing a corner point? It might help you generalize up to this problem, but even on this I'm completely stumped.

Edit2: Have you tried the 2 dimensional equivalent of drawing lines through a square grid missing a corner point? It might help you generalize up to this problem, but even on this I'm completely stumped.