##
921 posts tagged with math.

Displaying 251 through 300 of 921. Subscribe:

## Poul la Cour?

Can anyone point me towards a good resource for learning more about Poul la Cour's work on wind turbines? Or other historic wind turbine work? [more inside]

## What should my sample size be?

Say that I have a bag which contains 100 balls and every ball in the bag should be red, but it's possible that one or more of these balls is the wrong colour. How many balls should I look at to be 90% sure that all the balls are red? Or 95%? Or 99.9%? Talk me through how to work this out, please?

## Mortgage Math Problem

Please teach me how to solve this problem related to a Home Equity Line Of Credit. While I am looking for an answer, I am equally interested in learning the math required to solve the problem. [more inside]

## Practice Probability Word Problems

What great books or resources are there for practicing probability word problems such as for standardized tests like the GRE? [more inside]

## Direct line to Stephen Hawking

Where can I find someone willing to help me do

*relatively*simple (ha!) relativistic time dilation calculations? [more inside]## What are the odds that two randomly selected people share the same bank PIN?

Statisticsfilter: Given available information about the distribution of self-selected 4-digit passwords (specifically banking PINs), is it possible to calculate the probability of two randomly selected individuals having the same PIN? If so, what're the odds? [more inside]

## Building website for math students, first-time programmer, need some guidance.

Building website for math students, first-time programmer, need guidance. [more inside]

## Percentage Calculation

I know the price of something now and what the price was 2 years ago - how do I calculate that as an annual percentage increase? [more inside]

## Two roads diverged in a yellow wood... and I took the one where I went crazy for a month to raise my score 40 points... and that uh... has made all the difference?

GRE-Filter: I was happy with my GRE scores. Then, I received word that I have the opportunity to get into a super-duper-top-tier doctoral program previously inaccessible. However, my Quantitative Score--while still in the range of accepted scores over the years for this program--is now less-than-stellar relatively speaking. Is it crazy to think I could study intensely for about a month and improve my score 30-50 points? Am I overthinking this? [more inside]

## Help me figure out what in the world I should do with my life.

Should I change my major? Drop out of school to become a plumber or electrician? I need some advice. [more inside]

## What is the cardinality of the set of all people who shall expel us from the paradise that Cantor has created?

Sweet descriptions of the empty set? [more inside]

## Typeset my equations--as vector graphics

I am trying to create math worksheets in Adobe Illustrator. I would like to not manually build the equation layout. Is there a math typesetting program (like LaTeX) that creates vector graphics I can plug directly into AI? Free/stupidly easy to use/OS X compatible are the key requirements.

## How fat DOES a man have to be to stop a runaway trolley?

How fat DOES a man have to be to stop a runaway trolley?
Check my math/physics please. [more inside]

## Take a math course to overcome math fear?

Math is sexy! But I am afraid of math. What class should I take to overcome my fear and get cozy with numbers? [more inside]

## Help me help my brain learn how to scale up and down with precision in Adobe Illustrator.

If I scaled the artwork up by typing 173.95% into the scale dialog box in Adobe Illustrator, what percentage do I scale it down by in order to get it back to its original size. Is there a simple equation that will do this operation? [more inside]

## what sort of maths do the aliens have?

Are some areas of maths inherently central and others as more peripheral?
Or is any sense of centrality just a human experience, a cultural artifact arising from:
what has had greater application,
what has been studied more,
what produces a greater sense of the sublime in the human mind?
Are some parts of mathematics inherently a more fundamental description of what is going on in the universe, or is it as silly (or correct?) to talk about maths that way as it would be to talk that way about a classical ballet? [more inside]

## Can somebody help me track down the source claiming Leonid Kantorovich was responsible for safety on the Road of Life during the Siege of Leningrad?

Can somebody help me track down the source claiming Leonid Kantorovich was responsible for the safety of evacuees on the Road of Life during the Siege of Leningrad? [more inside]

## How do I calculate the probability of a specific sum of repeated die rolls?

I'm looking to learn how to calculate probabilities for a multi-round dice game. I've researched this question some, and it looks like I might need to know how to use the multinomial distribution, but I can't find any good introductions. Please point me to the most layman-accessible educational material on this subject, and help me to help myself. [more inside]

## Gambling odds question

How would one (legally) take advantage of the change in odds of a given NFL team to win the Super Bowl? [more inside]

## Expanding my pure math knowledge?

Can anyone recommend some advanced (pure) math books to learn new subjects? Also nonfiction books about math that are good reads? [more inside]

## What are the odds?

Math/probability not sports: I am not a gambler, but I am trying out a method of betting on sports with some initial success. At what point can I use the numbers to confidently assume that this is down to the system rather than luck? [more inside]

## Numbers Rackets and Benford's Law

## I'm bad at math.

I already know where to place my router. My question is, how do I find the exact center of my house? [more inside]

## Why should "e" exist?

Why is the number "e" so... [more inside]

## Help me understand a little logic problem.

Help me understand this. Math/logic puzzle follows... [more inside]

## Too much noise in my data

Putting on the math signal: calling the statistics-literate. Trying to change my weight/body composition and track progress in a useful way, but I'm having trouble separating normal daily variation from actual real change. [more inside]

## Help her learn Alg II by Tuesday

Sister just learned she has to take an Algebra II test on Tuesday that covers the whole shebang. She's forgotten (repressed?) most of it. What's her best bet for an Algebra II crash course that will go over all the topics? She's very smart, but not a math person.

## Looking for a new or different High School math test generator, and Apple programs or apps for use in the classroom

I'm looking for software for a high school math teacher: first, a better/newer test generator, and second, in-classroom programs, bonus points for apps for an Apple laptop and/or an iPod touch. Details inside. [more inside]

## x + y = A in pre-calc. Help me solve for x and y!

What do I need to know to be ready for pre-calculus? [more inside]

## The Iceman Wondereth

How much is an ice cube from my fridge worth? [more inside]

## How does science education work?

What's important for me to know about being a science teacher, since I've only taught math but will now be training teachers of both contents? [more inside]

## "Why am I supposed to divide here?"

I need books that are good at explaining how to explain things to children. [more inside]

## My Trig Teachers Name Was Mr. Angle But That Didn't Make Him A Good Teacher.

My math skills are no where near where I'd like them to be. Can you recommend a self-paced math learning site? Pretty much any branch of math can apply. [more inside]

## Math is Hard (I need help)

Math is hard. Please help me with a slope-related problem. [more inside]

## Recommend a programmer a book that teaches high school maths step by step

Can you recommend a programmer a book that teaches high school maths step by step? I did maths at high scool and I was OK at it. However, fifteen years later, after forgetting almost all the maths I learnt back then, I am diving deep into the theory of programming algorithms (sorting, tree structures, graph algorithms and so forth). I find the programming straight forward, but I am struggling with the theory and proof of algorithmic time and space complexities. I am looking for a book that will cover algebra, logs, limits, inductive proof, matrix manipulation and so forth. [more inside]

## Mathless Engineer, Need Help!

How can I learn calculus and differential equations well, in a relatively short amount of time? [more inside]

## List places to teach/instruct/adjunct undergrad Math in Seattle?

List places to teach/instruct/adjunct undergrad Math in Seattle? [more inside]

## The Limits of Flatness

Are there an infinite number of 2D shapes? [more inside]

## Mac friendly computer software to draw math pictures.

Anyone know of a Mac friendly computer program that makes it easy to draw geometric figures? Preferably free, but I'm willing to pay if its not too much and if its worth it. [more inside]

## Operations in the Klasies Caves

I was helping my 4th grade age sister-in-law with her math homework, and came across a question that I couldn't figure out. Can you do it? [more inside]

## Math of Astrology

Could you recommend a book or web site on the math of astrology? [more inside]

## Getting my math(s) right.

Maths (math) people of the US: I need your help in working out if certain British conventions would be understood or standard in the US classroom. [more inside]

## Physical Mathematics?

Is there a book that teaches math via physics? [more inside]

## Best network/graph theory software for non-techies?

I'm teaching a minicourse about networks, graphs, and computation to a non-technical audience (mostly grad students in the humanities.) What's the right software platform? [more inside]

## Pocket Anthropology

Is there a way to find out approximately when I left this wad of money in my (very old) jacket pocket, using statistics and date/number info from the bills? What would be the minimum number of bills needed for such a thing?

## It's a piece of cake to bake a pretty cake

How do I score my fantasy cake contest in the most fair manner? [more inside]

## Exit strategy, please

I'm a math PhD student with two years left. I'm not sure I want a job in academia (but maybe I do). What should I be doing to maximise chances of success (whatever that means)? [more inside]

## Why can the reals be well-ordered but not countable?

Math-Filter - Set theory edition:
I am struggling with the difference between countable infinite sets and well-ordering. Longer explanation inside. [more inside]

## An odd property of Eigenvectors

The first eigenvector is related to the sum of the columns of a matrix. What is this property called? [more inside]

## Math Geeks!! Assistance needed!!

How should a surcharge be calculated? [more inside]