Search found 47 matches

by AnotherUser
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.
by AnotherUser
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?
by AnotherUser
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?
by AnotherUser
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...
by AnotherUser
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?
by AnotherUser
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...
by AnotherUser
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...
by AnotherUser
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?
by AnotherUser
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...
by AnotherUser
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...
by AnotherUser
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...
by AnotherUser
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...
by AnotherUser
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:
[math]\int \sec^5{x} \tan{x} dx=\int \frac{\sin{x}}{\cos{x}^6}dx[/math]
by AnotherUser
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.
by AnotherUser
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...
by AnotherUser
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...
by AnotherUser
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...
by AnotherUser
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? ...
by AnotherUser
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- ...
by AnotherUser
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.
by AnotherUser
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 ...
by AnotherUser
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.
by AnotherUser
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...
by AnotherUser
Sat Aug 23, 2008 2:28 pm UTC
Forum: School
Topic: MIT
Replies: 60
Views: 8742

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...
by AnotherUser
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...
by AnotherUser
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...
by AnotherUser
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...
by AnotherUser
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 ...
by AnotherUser
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. ...
by AnotherUser
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...
by AnotherUser
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...
by AnotherUser
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...
by AnotherUser
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...
by AnotherUser
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.
by AnotherUser
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.
by AnotherUser
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 ...
by AnotherUser
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 ...
by AnotherUser
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...
by AnotherUser
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 ...
by AnotherUser
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.

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