## Search found 301 matches

- Wed Nov 14, 2007 5:17 pm UTC
- Forum: Mathematics
- Topic: Amusing answers to tests
- Replies:
**393** - Views:
**60900**

### Re: Amusing answers to tests

I have a wonderful answer to this, for which this exam paper is too small to hold it.

- Tue Nov 13, 2007 9:37 pm UTC
- Forum: Serious Business
- Topic: I'm 13 and wish to have a good education.
- Replies:
**95** - Views:
**10754**

### Re: I'm 13 and wish to have a good education.

True, but when someone dismisses what is arguably the *best* source because it is 'just one list' then they've opened themselves up to being shown a world of other sources, all of inherently inferior quality. I completely agree, but I am saying that there must be better sources than that. Try and c...

- Tue Nov 13, 2007 9:24 pm UTC
- Forum: Serious Business
- Topic: I'm 13 and wish to have a good education.
- Replies:
**95** - Views:
**10754**

### Re: I'm 13 and wish to have a good education.

gmalivuk wrote:First non-US university (Cambridge) shows up at number 21

I have to be slightly wary of that one. I mean, look how far down LSE is and how high up S'ton is (that could be personal preference, but I can name quite a few which I would consider higher than S'ton)

- Tue Nov 13, 2007 9:04 pm UTC
- Forum: Mathematics
- Topic: It came from the internet...
- Replies:
**11** - Views:
**1765**

- Mon Nov 12, 2007 12:17 pm UTC
- Forum: Serious Business
- Topic: Genius
- Replies:
**28** - Views:
**3119**

### Re: Genius

RockoTDF wrote:Fair enough, but I'm still not quite sure what it is we are disagreeing about.

You thinking that mathematics and calculation are one and the same

- Mon Nov 12, 2007 7:23 am UTC
- Forum: Mathematics
- Topic: weird question
- Replies:
**25** - Views:
**3061**

### Re: weird questin

In right-driving countries, the driver sits on the left (usually). In left-driving countries, the driver sits on the right (usually). Are you sure it's just "usually"? I thought that the driver was always towards the center of the road, so passengers could be let in and out more safely. A...

- Sun Nov 11, 2007 11:52 pm UTC
- Forum: Serious Business
- Topic: Genius
- Replies:
**28** - Views:
**3119**

### Re: Genius

Doing maths once you out of school is that. The IMOs are all tests like that. I think you have just had poor schooling in maths and don't see what more there is I do see that there is more than that. I'm just saying that being able to *do* math doesn't make you a genius, but being able to truly und...

- Sun Nov 11, 2007 9:34 pm UTC
- Forum: Serious Business
- Topic: Happy Remembrance Day
- Replies:
**10** - Views:
**7075**

### Re: Happy Remembrance Day

I knew a simple soldier boy Who grinned at life in empty joy, Slept soundly through the lonesome dark, And whistled early with the lark. In winter trenches, cowed and glum, With crumps and lice and lack of rum, He put a bullet through his brain. No one spoke of him again. You smug-faced crowds with...

- Sun Nov 11, 2007 7:15 pm UTC
- Forum: Logic Puzzles
- Topic: What is the formula?
- Replies:
**18** - Views:
**3006**

### Re: What is the formula?

Ah... I remember doing that for GCSE. Twas such a waste of time. I did the 2D and 3D versions instantly and spent the rest of the time extending it through arbitrary dimensions

- Sun Nov 11, 2007 6:23 pm UTC
- Forum: Serious Business
- Topic: Happy Remembrance Day
- Replies:
**10** - Views:
**7075**

### Re: Happy Remembrance Day

They will not grow old, as we who are left grow old.

Age will not weary them, nor the years condemn.

At the going down of the sun,

And in the morning,

We will remember them

Yes, I went on remembrance parade today. Air raid sirens and everything.

Age will not weary them, nor the years condemn.

At the going down of the sun,

And in the morning,

We will remember them

Yes, I went on remembrance parade today. Air raid sirens and everything.

- Sun Nov 11, 2007 5:07 pm UTC
- Forum: Mathematics
- Topic: weird question
- Replies:
**25** - Views:
**3061**

### Re: weird questin

MartianInvader wrote:I must admit, my least favorite part of math is differential equations.

And that has to do with this how?

- Sun Nov 11, 2007 4:57 pm UTC
- Forum: Mathematics
- Topic: Techniques and Resources on Solving Functional Equations
- Replies:
**5** - Views:
**1218**

### Re: Techniques and Resources on Solving Functional Equations

Govalant wrote:Well if you had waht the function is I guess you could.

OK, I take it you don't understand what I am going on about.

Say you are given a polynomial or functions, in terms of other functions

Like

f(f(f(x)))=nf(f(x)+y

You have to find all possible values for f(x), OK?

- Sun Nov 11, 2007 3:13 pm UTC
- Forum: Serious Business
- Topic: I've waited my whole life to be discovered!
- Replies:
**35** - Views:
**4278**

### Re: I've waited my whole life to be discovered!

Well, let's say you move the average time of choosing an initial career four years earlier than it is now. I would imagine this would result in a higher percentage of people choosing something they later decide they are unhappy with. This equates to more people wasting time by changing careers, lea...

- Sun Nov 11, 2007 2:54 pm UTC
- Forum: Mathematics
- Topic: Techniques and Resources on Solving Functional Equations
- Replies:
**5** - Views:
**1218**

### Techniques and Resources on Solving Functional Equations

Does anyone know of any good techniques for solving functional equations (like f(f(n))=16n+x) type questions?

Thanks

PS. That one was made up and could be nonsense

Thanks

PS. That one was made up and could be nonsense

- Sun Nov 11, 2007 2:14 pm UTC
- Forum: Serious Business
- Topic: I've waited my whole life to be discovered!
- Replies:
**35** - Views:
**4278**

### Re: I've waited my whole life to be discovered!

jryans wrote:I don't think making people decide what to do with their lives earlier would really solve anything.

Why not. Then you either have time later on to fix it, or you can get onto the job track faster and be earning more money quicker.

- Sun Nov 11, 2007 8:13 am UTC
- Forum: Serious Business
- Topic: Genius
- Replies:
**28** - Views:
**3119**

### Re: Genius

Doing maths once you out of school is that. The IMOs are all tests like that. I think you have just had poor schooling in maths and don't see what more there is

- Sun Nov 11, 2007 8:12 am UTC
- Forum: Serious Business
- Topic: I've waited my whole life to be discovered!
- Replies:
**35** - Views:
**4278**

### Re: I've waited my whole life to be discovered!

I personally blame the US school system for this. I think that forcing people to specialize earlier will stop people messing around before getting a degree and a job.

- Sat Nov 10, 2007 11:27 pm UTC
- Forum: Mathematics
- Topic: Infinite Geometric Series
- Replies:
**17** - Views:
**1998**

### Re: Infinite Geometric Series

No, division by zero is not permitted. The last line should be "Assuming ( 1-x ) is non-zero" Fine, but for |x|>1? No, thats just whether or not it will converge. GPs converge for |x|>1 otherwise they go off to infinity If you need anymore information [url=Wikipedia]http://en.wikipedia.or...

- Sat Nov 10, 2007 11:17 pm UTC
- Forum: Mathematics
- Topic: Infinite Geometric Series
- Replies:
**17** - Views:
**1998**

### Re: Infinite Geometric Series

No, division by zero is not permitted.

The last line should be

"Assuming ( 1-x ) is non-zero"

The last line should be

"Assuming ( 1-x ) is non-zero"

- Sat Nov 10, 2007 11:11 pm UTC
- Forum: Mathematics
- Topic: Infinite Geometric Series
- Replies:
**17** - Views:
**1998**

### Re: Infinite Geometric Series

Think about it,

1+1+1+1+1+1+... doesn't converge

Its simply not true, think about them as APs

Anyway a/(1-1) implies Divide by 0. An illegal move

1+1+1+1+1+1+... doesn't converge

Its simply not true, think about them as APs

Anyway a/(1-1) implies Divide by 0. An illegal move

- Sat Nov 10, 2007 10:20 pm UTC
- Forum: Serious Business
- Topic: Genius
- Replies:
**28** - Views:
**3119**

### Re: Genius

Hrtbrkone wrote:Someone who wins at life on all different levels.

That would imply stupidity is genius.

Ignorance is bliss may sound flippant, but is extremely true..

- Sat Nov 10, 2007 9:35 pm UTC
- Forum: Mathematics
- Topic: math abbreviations
- Replies:
**50** - Views:
**8039**

### Re: math abbreviations

majikthise wrote:Do the other sciences feel the need to abbreviate to such a high degree? Or are we mathematicians just lazy?

I think its more a "maths needs to be pure" style thing. We think things should be universal and words tend to get in the way

- Sat Nov 10, 2007 7:19 pm UTC
- Forum: Mathematics
- Topic: Your own arithmetic tricks
- Replies:
**57** - Views:
**6378**

### Re: Your own arithmetic tricks

I personally like Simon's Favorite Factoring Trick (sometimes seen as SFFT). Not just because it has an awesome name, but because it is so useful

- Sat Nov 10, 2007 8:47 am UTC
- Forum: Serious Business
- Topic: Genius
- Replies:
**28** - Views:
**3119**

### Re: Genius

Being able to regurgitate information in not genius, nor is being able to plug and chug mathematics. It is the ability to use things that are memorized and apply them to the world in a new or creative way that virtually no one else can. I take issue with churning out mathematics is not genuis. Chur...

- Fri Nov 09, 2007 7:10 am UTC
- Forum: Mathematics
- Topic: base 5, 10, etc
- Replies:
**9** - Views:
**1750**

### Re: base 5, 10, etc

crp wrote:thnx for making me want to learn binaru(done) and hex(done)!

jerkfaces! lol

this really helped me with my programming, thnx

Learning binary for programming is more about learning the equivalent ascii characters than how it workds

- Wed Nov 07, 2007 5:47 pm UTC
- Forum: Mathematics
- Topic: Math Websites
- Replies:
**125** - Views:
**182644**

### Re: Great Math Site

Art of Problem Solving is linked to mathlinks :) I noticed that after I posted. More then that, mathlinks seems to be a derivitive/spin-off of AoPS. GMTA, eh? GMTA? And I think I should probably expand on "I concur", it is an absolutely fantastic forum, which despite much of it going over...

- Wed Nov 07, 2007 4:29 pm UTC
- Forum: Mathematics
- Topic: Math Websites
- Replies:
**125** - Views:
**182644**

### Re: Great Math Site

My favorite is MathWorld , formerly Eric's Treasure Trove of Mathematics, until some real arseholes at CRC publishing let their lawyers loose on him. Stephen Wolfram is no saint, but he gets serious awesome points for saving this site. The coolest one I've come across lately is The Art of Problem S...

- Wed Nov 07, 2007 7:35 am UTC
- Forum: Mathematics
- Topic: Math Websites
- Replies:
**125** - Views:
**182644**

### Re: Great Math Site

I concur

- Mon Nov 05, 2007 9:49 pm UTC
- Forum: Mathematics
- Topic: Prime Number Discovery, Has It Been Done?
- Replies:
**8** - Views:
**1708**

### Re: Prime Number Discovery, Has It Been Done?

101,103?

10403 9699690 9710093

Sorry mate, nice try

10403 9699690 9710093

Sorry mate, nice try

- Mon Nov 05, 2007 8:28 pm UTC
- Forum: Mathematics
- Topic: Favourite Erroneous "Proofs"
- Replies:
**194** - Views:
**43483**

### Re: Favourite Erroneous "Proofs"

And why is that? It because x^x^x^.^.^. only converges for e

^{-e}<x<e^{1/e}- Mon Nov 05, 2007 5:30 pm UTC
- Forum: Mathematics
- Topic: Fourth Dimensional Question
- Replies:
**16** - Views:
**1809**

### Re: Fourth Dimensional Question

An interesting side note to this, is that Pythagoras isn't the only way to measure distance in R

^{n}. You might want to look into that if you're interested- Mon Nov 05, 2007 8:12 am UTC
- Forum: Mathematics
- Topic: Favourite Erroneous "Proofs"
- Replies:
**194** - Views:
**43483**

### Re: Favourite Erroneous "Proofs"

a^a^a^.^.^. = 2 Find a a = \sqrt 2 b^b^b^b^.^.^. = 4 b = \sqrt 2 Therefore a^a^a^.^.^. b^b^b^b^.^.^. = 2 = 4 Therefore 2=4 I like that one I also like Assume 2=1 Be reversal 1=2 By Euclid's Second Common Notion, we may add the the two identities side by side: 3=3 Since the latter is true the former ...

- Mon Nov 05, 2007 8:08 am UTC
- Forum: Mathematics
- Topic: PIN
- Replies:
**8** - Views:
**2043**

### Re: PIN

gothgeek, If you're interested in how many possible combinations of anything there are (which is like a whole branch of mathematics), or if you just like really really big numbers for some reason, then here are some exercises to ponder: ⋅ How many ways can you put an ordinary deck of card...

- Sun Nov 04, 2007 10:36 pm UTC
- Forum: Mathematics
- Topic: Using rates
- Replies:
**10** - Views:
**1506**

### Re: Using rates

I've never really taken a statistics course, but the one thing I can help you with is the stdev, or standard deviation. It's basically a measure of how close the items in a set are to the mean. Also, assuming a large and not too awkward sample set: About 68% of the items in the sample set are betwe...

- Sun Nov 04, 2007 3:46 pm UTC
- Forum: Mathematics
- Topic: PIN
- Replies:
**8** - Views:
**2043**

### Re: PIN

10000

There are loads of reasons

10000 numbers between 0 and 9999 or 10

There are loads of reasons

10000 numbers between 0 and 9999 or 10

^{4}- Sat Nov 03, 2007 11:28 pm UTC
- Forum: Mathematics
- Topic: Pi repeats and the uncountable infinite set of numbers...
- Replies:
**14** - Views:
**2272**

### Re: Pi repeats and the uncountable infinite set of numbers...

Govalant wrote:About pi:

It's crap. Like said before, the chance of 3.1415926 appearing in the decimal expansion is really likely, and in 10^30 digits, it should be more than 90% I think.

Depends on whether or not the digits are perfectly randomly distributed

- Sat Nov 03, 2007 7:04 pm UTC
- Forum: Mathematics
- Topic: Pi repeats and the uncountable infinite set of numbers...
- Replies:
**14** - Views:
**2272**

### Re: Pi repeats and the uncountable infinite set of numbers...

quintopia wrote:I'm sure you people think every article written for The Onion is a hoax too? DTYSGDS.

I'm not sure what DTYSGDS means, so I'll respond to the reference to "The Onion". In general The Onion's articles and videos have comic value which that sincerely lacked

- Sat Nov 03, 2007 5:31 pm UTC
- Forum: Mathematics
- Topic: Pi repeats and the uncountable infinite set of numbers...
- Replies:
**14** - Views:
**2272**

### Re: Pi repeats and the uncountable infinite set of numbers...

On further inspection of the site, I have come to the conclusion that the site is full of mainly junk. Almost everything is categorized under around a million different headings.

- Sat Nov 03, 2007 5:15 pm UTC
- Forum: Mathematics
- Topic: Pi repeats and the uncountable infinite set of numbers...
- Replies:
**14** - Views:
**2272**

### Re: Pi repeats and the uncountable infinite set of numbers...

The comment posted on the "Infinity +1" article pretty much sums up my opinion of that article. He has the general idea about uncountability, but started off with a misconception. With regards to the "Pi Repeats" As far as I'm concerned that is to be expected. If you have somethi...

- Sat Nov 03, 2007 5:07 pm UTC
- Forum: Mathematics
- Topic: Using Logs to Solve
- Replies:
**6** - Views:
**1419**

### Re: Using Logs to Solve

mathmagic wrote:What "issue" are you trying to resolve? A different way of solving a problem like that?

Exactly, I can determine another solution by looking at the problem, but are there any otherways of looking at it so it will work?