## Search found 21 matches

Wed Jan 05, 2011 4:31 am UTC
Forum: Mathematics
Topic: Comprehensive Exam Help
Replies: 36
Views: 3332

### Re: Comprehensive Exam Help

I would think that you could use taylor series for the first one.
Wed Nov 17, 2010 1:27 am UTC
Forum: Computer Science
Topic: problems using Fibonacci
Replies: 4
Views: 1720

### Re: problems using Fibonacci

If you have n slots: __ __ __ __ __ __ __ __... Look at the first slot. There are two possibilities: cow or no cow. The number of possible configurations is the sum of these two configurations. If there is a cow then the number of subpossibilities is equal to the situation where you have n-2 slots b...
Wed Nov 17, 2010 12:29 am UTC
Topic: Open Source Legal System
Replies: 53
Views: 7915

### Re: Open Source Legal System

Also, the more transparent we can make governing, the better things will be. Perhaps we should get existing politicians to craft bills available in Wiki form, viewable, but not editable, by the public? That is a very good point and hopefully it would shorten the bills. Social Security was only abou...
Sun Nov 14, 2010 10:10 am UTC
Forum: Mathematics
Topic: Statistics & Album Reviews
Replies: 6
Views: 1085

### Re: Statistics & Album Reviews

Probably the simplest way to model the reviews would be to assign a weight to the average of all reviews as a sort of base and then average that with the mean of the reviews of the album weighted by the square root of the number of reviews. Something like: goodness of record=\frac{AverageAll Reviews...
Mon Sep 20, 2010 11:05 pm UTC
Forum: Science
Topic: Question on friction
Replies: 2
Views: 757

### Re: Question on friction

The coefficient of friction isn't perfectly constant for all normal forces and velocities but is mostly constant. At higher normal forces the coefficient goes up because the uneven surfaces mesh more. Also at higher velocities the coefficient of friction decreases because the surfaces "skip&quo...
Tue Sep 14, 2010 9:55 pm UTC
Forum: Mathematics
Topic: Rigorous method of redistricting?
Replies: 3
Views: 1915

### Rigorous method of redistricting?

I guess math is the best place to put this (feel free to move): Gerrymandering, the process of redrawing districts to favor incumbents or political parties, is a problem. One way to fix this would be to implement some sort of redistricting algorithm that generates reasonable districts given the cens...
Sat Jul 24, 2010 1:36 am UTC
Forum: Science
Topic: Knowledge from group averages
Replies: 25
Views: 3531

### Re: Knowledge from group averages

Wouldn't it have been better to use a logarithmic sort of bining? Less bias towards larger numbers?
Mon Jun 07, 2010 5:11 pm UTC
Forum: Mathematics
Topic: Probability Question
Replies: 14
Views: 2712

### Re: Probability Question

She is making the mistake of looking for a pattern then determining if it is likely or not. Almost any set of data will have a pattern that is very rare because of the large number of random patterns possible. In other words, like others have posted, she will find something unusual or surprising but...
Wed Jun 02, 2010 4:44 am UTC
Topic: Is an openness to uncertainty necessary?
Replies: 21
Views: 2714

### Re: Is an openness to uncertainty necessary?

It is foolish to have absolute faith in anything in general because then no amount of evidence will convince you otherwise. The logic of Baynesian inference is that you can update your beliefs based upon evidence. In updating one's beliefs one can use the formula: P(B|E)=\dfrac{P(E|B)...
Wed Jun 02, 2010 4:18 am UTC
Topic: A REAL Utopian System?
Replies: 41
Views: 6293

### Re: A REAL Utopian System?

If a child is forced to choose between 2 cereals to have for breakfast every morning, and if he chooses outside of those 2 given choices he is beaten, obviously, the child is usually, if not always, going to choose of those two. Even then, he will probably have a preference so he'll likely choose j...
Tue May 25, 2010 3:40 am UTC
Forum: Science
Replies: 94
Views: 11167

you could use a Pottassium Chloride injection which is what the US government uses. It stops the heart very quickly and is seemingly painless.
Tue May 18, 2010 2:29 am UTC
Forum: Mathematics
Topic: Multiple Integral Question
Replies: 3
Views: 888

### Re: Multiple Integral Question

I would think that is because they aren't that unique. You just take the integral then evaluate whatever limits happen to be present due to the indefinite nature of the integral.
Sat May 15, 2010 12:43 am UTC
Forum: General
Topic: Useful or interesting units for measuring speed
Replies: 50
Views: 7892

### Re: Useful or interesting units for measuring speed

I like (for impracticality):

Parsecs/Plank Times
or on the other extreme:
Plank Lengths/eon
Sun May 09, 2010 2:06 am UTC
Forum: Science
Topic: To what extent is my Archaeology professor on crack?
Replies: 14
Views: 2425

### Re: To what extent is my Archaeology professor on crack?

There is some principle of quantum mechanics (or maybe it was relativity) that you can't have causality, simultaneity, and another thing. I wish I could remember it better, but most physicists throw out simultaneity cause the other two are really hard to part with. I believe what you are refering t...
Wed May 05, 2010 1:38 am UTC
Forum: Gaming
Topic: Civilization 5!!!
Replies: 481
Views: 116115

### Civilization 5!!!

Ok I did a search and didn't see a thread on this so I thought I'd start one. It is supposed to be out September 1st, this year. New Features: Hexagonal Tiles, Only one unit per tile, and independent city states. What do you think of the changes? I personally think it would be awesome if someone mad...
Wed May 05, 2010 12:35 am UTC
Forum: School
Topic: Illinois Institute of Technology or Caltech?
Replies: 8
Views: 1648

### Re: Illinois Institute of Technology or Caltech?

Ok well I made me decision and am going to IIT. I just really didn't want any debt.
Wed May 05, 2010 12:33 am UTC
Forum: School
Topic: 2010 AP tests discussion thread!
Replies: 96
Views: 10954

### Re: 2010 AP tests discussion thread!

Schedule: Friday: European History: feel like I know everything only thing in question are the essays. Monday: Bio and both Physics C tests: ugh, don't know how I'll do on bio, I will do well on MC but hate their essay format. Mechanics will likely be a five, EM not so much. Thursday: Macroeconomics...
Tue Apr 27, 2010 11:05 pm UTC
Forum: School
Topic: Awesome Teacher Quotes
Replies: 1764
Views: 401159

### Re: Awesome Teacher Quotes

This isn't an exact quote but my math teacher said of prom.

There is a spectrum between creating life and destroying it, make sure to stay in the middle
Mon Apr 26, 2010 1:45 am UTC
Forum: School
Topic: Illinois Institute of Technology or Caltech?
Replies: 8
Views: 1648

### Illinois Institute of Technology or Caltech?

Ok I have to make a decision about where to go for undergrad.I'm likely going to major in engineering (undecided about anything more specifically). I'm also undecided about going to graduate school. I have eliminate my choices of the schools that I was accepted at down to Caltech and Illinois Instit...
Thu Apr 22, 2010 1:15 am UTC
Forum: Mathematics
Topic: Baynesian interpretation of confidence intervals?
Replies: 5
Views: 831

### Re: Baynesian interpretation of confidence intervals?

sorry for the confusion the sample has a mean of 0 and the mean of the population is unknown.
Wed Apr 21, 2010 2:57 am UTC
Forum: Mathematics
Topic: Baynesian interpretation of confidence intervals?
Replies: 5
Views: 831

### Baynesian interpretation of confidence intervals?

So lets say we have a sample of size 100 from a population with a known standard deviation of 10 with mean 0. We construct a 95% confidence interval with bounds (-1.960,1.960). A frequentist would interpret this as: "Were this procedure to be repeated on multiple samples, the calculated confide...