Search found 732 matches

by the tree
Fri Jan 08, 2010 1:17 pm UTC
Forum: Mathematics
Topic: An odd equality from a test
Replies: 10
Views: 1470

Re: An odd equality from a test

Written all mathsy like the function would just be [imath]f(k) := \min \{ x | \sin{(x)}e^{x} = k \}[/imath], taking logs would give you complex values and horrible stuff.
by the tree
Sun Dec 27, 2009 12:12 pm UTC
Forum: Mathematics
Topic: Do E-Harmony's 29 Dimensions form an Orthogonal Basis?
Replies: 17
Views: 2751

Re: Do E-Harmony's 29 Dimensions form an Orthogonal Basis?

If it's not independent then it's dependent. I'd like to think that none of them are independent, partially because some are nearly antonyms and partially because it'd be rubbish if you could be 100% on half of them. Also there's no real origin point in OKCupids system - or at least not one that you...
by the tree
Sun Dec 27, 2009 11:23 am UTC
Forum: Mathematics
Topic: Graphing Problem
Replies: 9
Views: 1876

Re: Graphing Problem

Of course, you could do it by hand to an extent. You could easily describe the values when x and y are small, around 1 and big - and I think it's smooth most of the time.
by the tree
Thu Dec 24, 2009 3:30 pm UTC
Forum: Mathematics
Topic: Graphing Problem
Replies: 9
Views: 1876

Re: Graphing Problem

I can't think of any free software that I'd recommend but I tried this out in Maple, hope this is some use. Spoilered for massive images. with(plots): eq := x^(1/y) * y^(1/x) -z =0; animate(implicitplot,[eq,x=0..10,y=0..10,thickness=2,color=blue],z=0..4,frames=50); im...
by the tree
Thu Dec 24, 2009 1:20 pm UTC
Forum: Mathematics
Topic: Favorite math jokes
Replies: 1452
Views: 494834

Re: Favorite math jokes

The engineer and the mathematician are given an assignment: Have sex with the beautiful woman at the end of the hallway. Advance toward her by halving the distance between you. The mathematician begins to sob and cries aloud "Ill never get there" The engineer rips off his clothes as he sp...
by the tree
Tue Dec 22, 2009 8:25 pm UTC
Forum: Mathematics
Topic: Algebra Manipulator Program
Replies: 8
Views: 1354

Re: Algebra Manipulator Program

An intuitive interface for an algebra program? I love it! One handy thing would be if it didn't need to be around an equation all the time, or that terms don't need to dragged over an equals. It would be pretty awesome if I could drag an operator over an equation, like an integral and then click aga...
by the tree
Tue Dec 22, 2009 11:45 am UTC
Forum: General
Topic: Lucky Ten Thousand (TIL)
Replies: 13432
Views: 1775050

Re: Today I Learned

But if you [count opportunity cost] you had better take into account the increased earning potential thereafter... No, cost and net loss are different things. Counting opportunity cost essentially comes down to counting what you could have done instead with the resources that you used other than ju...
by the tree
Fri Dec 18, 2009 5:28 pm UTC
Forum: News & Articles
Topic: Geek stereotypes drive women away from computer science
Replies: 152
Views: 16625

Re: Geek stereotypes drive women away from computer science

This is the sort of thing that drives me crazy. My post had NOTHING in it that was sexist, or implied that women couldn't do certain professions. Just that they PREFERRED certain professions, and I didn't even go into why. Since when did you get to tell anyone what women prefer? Just because people...
by the tree
Thu Dec 17, 2009 11:26 pm UTC
Forum: Computer Science
Topic: Really need a source for a trivial statement about VMs
Replies: 4
Views: 992

Really need a source for a trivial statement about VMs

For a philosophy essay, I'm saying "in the case of a virtual machine, both operating systems can be said to exist in their entirety even if one is reliant on the other". Is there is a reliable on-line source that I could cite for that? Or if any of you have a compsci textbook with a statem...
by the tree
Thu Dec 17, 2009 1:12 pm UTC
Forum: General
Topic: Lucky Ten Thousand (TIL)
Replies: 13432
Views: 1775050

Re: Today I Learned

Yesterday I learned that in the second after taking a sip of wine, it is impossible to make any noise whatsoever.

Worst.
Performer.
Ever.
by the tree
Tue Dec 15, 2009 1:39 am UTC
Forum: General
Topic: Lucky Ten Thousand (TIL)
Replies: 13432
Views: 1775050

Re: Today I Learned

TIL: When the night shift is understaffed, they close off the self service checkouts. So people with unusual sleep patterns have to actually interact with people while shopping.
by the tree
Sun Dec 13, 2009 11:11 am UTC
Forum: Mathematics
Topic: So, what can I do to keep myself entertained and interested?
Replies: 14
Views: 2041

Re: So, what can I do to keep myself entertained and interested?

I get the impression that in countries where they use words like PreCal, it can mean an awful lot of different things. There exists textbooks called things like 'PreCalculus with Limits' which sounds awfully close to a slow introduction to plain old calculus. In fact, yeah, you should probably learn...
by the tree
Sun Dec 13, 2009 11:01 am UTC
Forum: Mathematics
Topic: Why do people keep saying this?
Replies: 42
Views: 4919

Re: Why do people keep saying this?

There are all types of sort-of ways around the problem of induction. I was happy throwing Occam's Razor at it until recently, now I'm not happy with Occam's Razor at all (learning philosophy of science screws you up a bit), but that's where modern philosophers step in like Popper with falsification ...
by the tree
Sat Dec 12, 2009 6:17 pm UTC
Forum: General
Topic: What are you looking forward to in the next few days?
Replies: 14
Views: 1981

What are you looking forward to in the next few days?

So I just realised that I have a fair amount to look forward to in the immediate future: I have a couple of essays to do but they are for modules that don't really matter so I can fun with them, on Tuesday I am hosting an open mic poetry night (I shall be bugging the venue to give me free drinks for...
by the tree
Mon Nov 09, 2009 1:29 pm UTC
Forum: Mathematics
Topic: Predicting a score based on rank.
Replies: 1
Views: 327

Predicting a score based on rank.

Members of the website Tumblr have a "tumblarity" score, and it turn are given a rank based on that score. Obviously it's possible for many members to have the same tumblarity, but the ranks are unique. It's also impossible to see the whole league table - you can only see your rank and tum...
by the tree
Sun Nov 01, 2009 5:58 pm UTC
Forum: Your art and links
Topic: Nanowrimo 2009!
Replies: 112
Views: 12638

Re: Nanowrimo 2009!

Hmm... maybe I should start on the 2000 I was planning to write tonight. That would be a sensible way to start.
by the tree
Sun Nov 01, 2009 12:08 pm UTC
Forum: Your art and links
Topic: Nanowrimo 2009!
Replies: 112
Views: 12638

Re: Nanowrimo 2009!

Why? Your word count is under your username.

Anyways, I'm here. 1/100 of the way through.
by the tree
Thu Oct 22, 2009 11:58 am UTC
Forum: Mathematics
Topic: Blindly sharing out a cake.
Replies: 5
Views: 843

Re: Blindly sharing out a cake.

Hmm, two silly mistakes on my part there. Still, is there a way that this could be done fairly? I'm thinking that there should be a proportion that each person could take that would mean that after many days, it should average out well.
by the tree
Thu Oct 22, 2009 11:03 am UTC
Forum: Mathematics
Topic: Blindly sharing out a cake.
Replies: 5
Views: 843

Blindly sharing out a cake.

This is a problem that just came into my head, vaguely based on an IRL situation with a pile of loose change. Say there is a massive cake, and n people entitled to a equal share. Over the course of a day, each person comes to take their share but has no idea if anyone else has taken theirs already, ...
by the tree
Wed Oct 14, 2009 6:04 pm UTC
Forum: General
Topic: So I'm starting a magasine
Replies: 1
Views: 435

So I'm starting a magasine

Or, helping someone else do so. I've been asked to find out some things. So y'know, I'm going to ask your help. - roughly how much 10pt Times New Roman fits on a side of A5? More generally, how would I go about finding out stuff similar to that? - are there any incredibly dirt cheap printers in the ...
by the tree
Sun Oct 11, 2009 7:14 am UTC
Forum: General
Topic: Hype your ripe snipes 'n' gripes
Replies: 28619
Views: 3586458

Re: Rant Thread - The Spates of Wrath

Set top boxes should have more buttons on them as well - not being able to do anything without a remote is pretty dumb.
by the tree
Thu Oct 08, 2009 12:12 pm UTC
Forum: Your art and links
Topic: (Post Your) Incredible Poems (Here!)
Replies: 544
Views: 262788

Re: (Post Your) Incredible Poems (Here!)

National Poetry Day today, and the theme is Heroes and Heroines: Heroes and Heroines is a fucking stupid topic I can't do much better than to mock it Or wonder why someone thought That this would be a sensible theme for poetry In 2009. When the closest thing we have to heroes in this country Is cele...
by the tree
Thu Oct 01, 2009 9:20 am UTC
Forum: General
Topic: Hifaleetin' thoughts
Replies: 90225
Views: 9392752

Re: Fleeting/Random/Thoughts (Random like the plague)

I wonder what the first alcoholic drink was. I'm guessing that a lot of cultures invented fermentation independently, and probably each with different ingredients. I'm guessing it started with just whatever old fruit was lying around. Stuff that doesn't really need to be farmed, like berries, maybe....
by the tree
Wed Sep 23, 2009 5:44 pm UTC
Forum: Mathematics
Topic: Just wondering: Why can't we find i?
Replies: 50
Views: 7472

Re: Just wondering: Why can't we find i?

Yakk wrote:The OP's problem is that they think that i can be described as a value on 'the real number line' (or some mental approximation thereof). No, there is no value on (or even reasonably near to) the number line that has the properties we want i to have.
This is all that really needed to be stated.
by the tree
Wed Sep 23, 2009 5:11 pm UTC
Forum: Mathematics
Topic: Just wondering: Why can't we find i?
Replies: 50
Views: 7472

Re: Just wondering: Why can't we find i?

skeptical scientist wrote: I prefer to think of i as (0,1), because thinking of 1 as (1,0) is much less confusing, and not at all circular.
(1,0).(0,1)=(0,1) looks a tad confusing.
by the tree
Wed Sep 23, 2009 4:21 pm UTC
Forum: Mathematics
Topic: Maple help wanted: creating graphics with MatrixPlot
Replies: 0
Views: 355

Maple help wanted: creating graphics with MatrixPlot

In here, 'VS' is a Matrix representing the Vedic Square, but could any 9x9 matrix with single digit integers for the purpose of my question: #Generate VS Matrix Plot matrixplot(VS,heights=histogram,orientation=[0,0],axes=normal,labels=["","",""],gap=0.2,shading=zgraysca...
by the tree
Wed Sep 23, 2009 8:44 am UTC
Forum: Mathematics
Topic: Just wondering: Why can't we find i?
Replies: 50
Views: 7472

Re: Just wondering: Why can't we find i?

It's probably best you aim for a general understanding of complex arithmetic first, how complex numbers are represented and how you can do basic things like addition and multiplication. Then you can look at Taylor series , specifically those for exp() sin() and cos(), after that you should be able t...
by the tree
Tue Sep 22, 2009 11:10 am UTC
Forum: Mathematics
Topic: Help teaching talented 16-year olds
Replies: 10
Views: 1302

Re: Help teaching talented 16-year olds

Sorry, clearly English is not your first language: do you mean derivation or do you mean differentiation ? I'm guessing the latter considering that we're talking about 16 year olds without much prior training. If we're talking differentiation then I think that it should be taught (at first) in both ...
by the tree
Tue Sep 22, 2009 10:55 am UTC
Forum: Mathematics
Topic: What's the coolest thing you've ever learned in math class?
Replies: 58
Views: 6808

Re: What is...

Cantor's diagonalisation argument was presented to me while I was sitting at the back of the class, not particularly awake with a lecturer that had a strong accent an extremely verbose way of explaining everything*, but it still took me back in terms of it's elegance. And I love now being able to ta...
by the tree
Sun Sep 20, 2009 2:16 pm UTC
Forum: Mathematics
Topic: On finding facts and figures
Replies: 1
Views: 366

On finding facts and figures

When I was little, in a physics lesson I was given a question in my homework asking how long it would take a sound to cross a football (as in soccer was) field - I think we had the Internet at the time but I wouldn't have known how to use it for that stuff - and despite my parents having a shittonne...
by the tree
Sat Sep 12, 2009 2:50 pm UTC
Forum: School
Topic: Hypothesis: STERORTYPES AND HOW THEY FIT THE SOCIETY WELL
Replies: 51
Views: 4147

Re: Hypothesis: STERORTYPES AND HOW THEY FIT THE SOCIETY WELL

Mokele wrote:Regardless, they fall apart once out of the unusual social environment of HS. Beyond this, there's no real 'discussion' of any sort.
Honestly I think that's a fairly interesting phenomenon - why exactly is it that HS encourages pigeon holing?
by the tree
Sat Sep 12, 2009 2:45 pm UTC
Forum: School
Topic: Hypothesis: STERORTYPES AND HOW THEY FIT THE SOCIETY WELL
Replies: 51
Views: 4147

Re: Hypothesis: STERORTYPES AND HOW THEY FIT THE SOCIETY WELL

I think when I was in high school all the indie kids/rockers/whatever pretty consistently got higher grades than the 'nerds', which was never that surprising. People went for the position of Teachers Pet or I'mTooIntelligentToSocialiseWithThesePlebs rarely were super geniuses (which in retrospect, w...
by the tree
Tue Sep 01, 2009 4:52 pm UTC
Forum: News & Articles
Topic: "Third of teenage girls suffer abuse in relationships"
Replies: 581
Views: 31960

Re: "Third of teenage girls suffer abuse in relationships"

Pressuring anyone to do something with their body that they are not comfortable with is wrong. I don't really see any room for discussion on this one. Persuading someone that they aren't sluttish is all well and good, telling someone to change their worldview so that you can fuck them is another ma...
by the tree
Tue Sep 01, 2009 11:18 am UTC
Forum: News & Articles
Topic: "Third of teenage girls suffer abuse in relationships"
Replies: 581
Views: 31960

Re: "Third of teenage girls suffer abuse in relationships"

Oh, I don't find it normal at all. I find it very loathesome. That being said, however, most of the women I know personally have been either mentally or physically abused in a relationship at some point in time in their life. A bit more than 1/3. Yeah, my anecdotal viewpoint matches yours then. But...
by the tree
Tue Sep 01, 2009 10:52 am UTC
Forum: News & Articles
Topic: "Third of teenage girls suffer abuse in relationships"
Replies: 581
Views: 31960

Re: "Third of teenage girls suffer abuse in relationships"

The Reaper wrote:I would have thought it would be more than just 1/3. :\
Really? I'll have to agree with this person:
Diana Sutton of the NSPCC said: "It is shocking to find so many young people view violence or abuse in relationships as normal." (AFP)
by the tree
Wed Aug 26, 2009 10:22 am UTC
Forum: News & Articles
Topic: Penny Arcade's Take on Homophobic Slurs
Replies: 550
Views: 44484

Re: Penny Arcade's Take on Homophobic Slurs

If we allow ourself to use vulgar ethics, it's easy to see that one is morally neutral while one is morally negative. My understanding is that you are supposed to be pride about morally positive things. Actually, being openly homosexual IS morally positive, because it sets a good example for others...
by the tree
Tue Aug 25, 2009 11:00 am UTC
Forum: Mathematics
Topic: Easy Trig
Replies: 9
Views: 1326

Re: Easy Trig

No problem.
by the tree
Tue Aug 25, 2009 10:11 am UTC
Forum: Mathematics
Topic: Easy Trig
Replies: 9
Views: 1326

Re: Easy Trig

We can't give you the whole thing, see the rules, specifically those regarding homework . Draw a diagram, so that you are sure of what information you have and what information you need. If you are familiar with* the sine rule then use that, otherwise you will need to find some right angled triangle...
by the tree
Tue Aug 25, 2009 9:42 am UTC
Forum: News & Articles
Topic: Quangos blackball ... oops, sorry ... veto ‘racist’ everyday
Replies: 228
Views: 16908

Re: Quangos blackball ... oops, sorry ... veto ‘racist’ everyday

An attack of common sense, would be nice. If you could convince people to actually think before they speak then you wouldn't need to ban specific words or phrases at all. But in reality people seem to need rules and guidelines like these - it's a sad truth.

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