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Help me remember math!

I'm taking a calc-based physics class as well as a calculus class. The last time I took a math class was 5 years ago and I would love some refresher resources - or even better, an intensive algebra-trig-precalc course. Are there any online or in the DC area? [more inside]
posted by alaijmw on Sep 2, 2010 - 10 answers


Why are there 169 starting hands in Hold 'em?

Can someone explain to me why there are 169 starting hands in poker? [more inside]
posted by tomtheblackbear on Aug 22, 2010 - 17 answers

Mathematical sequences challenge

Mathematical sequences challenge. Need your help. [more inside]
posted by gummo on Aug 18, 2010 - 7 answers

Unclump my histogram

How to smooth a histogram or unclump a dataset. [more inside]
posted by DU on Aug 17, 2010 - 12 answers

How to find all roots of a function in two variables?

I've got a long function with two variables, encoding - I suspect - a hidden message. Most likely, the message is somehow encoded in the function's roots. Is there any good software to plot a function in two dimensions and only show the points where it evaluates to zero? [more inside]
posted by Triton on Aug 15, 2010 - 7 answers

How many ways can I hold my girlfriends hand?

How many different ways can you hold hands with someone? [more inside]
posted by 777 on Aug 13, 2010 - 12 answers

The only chemist who does a triple integral without complaining

I studied mathematics and some computer science as an undergrad, and I loved it. I feel that my real passion, however, is in experimental sciences or engineering. What are some graduate school options for me? [more inside]
posted by scose on Aug 10, 2010 - 9 answers

Help me learn to figure out dice probability for games

Help me teach myself enough about probability to properly balance the board game I want to design. [more inside]
posted by Caduceus on Aug 9, 2010 - 3 answers

Principle domain of a polar equation?

I need help understanding the "principle domain" (a term only my professor seems to use) of a polar function. That is, how do I find the smallest value delta such that [0,delta] plots all of the unique points on the curve; any values greater than delta re-trace points. I suspect that if MeFi could identify the more common name for this, uh, procedure, I'd be set.
posted by phrontist on Aug 4, 2010 - 10 answers

Don't meet the same person twice (involves math ... somehow)

36 people total, meeting in groups of 6. After 5 minutes, the groups shuffle into completely new groups. How many "rounds" can we go without people meeting with someone they've already met? [more inside]
posted by foggy out there now on Jul 31, 2010 - 27 answers

Biographies of abstract thinkers wanted

Looking for biographies of scientists or mathematicians. [more inside]
posted by reenum on Jul 27, 2010 - 22 answers

A variation on the birthday paradox

I have 232 facebook friends, and six of them share a birthday in common (not 6 different pairs of people on the same birthday, but 6 out of the 232 were born on the 17th of July. Now, I know it only takes 23 random people to get a 50% chance of at least ONE birthday collision, but how the heck do I figure out the odds on this one? Is this a significant anomaly, or reasonably expected? My one stats class was entirely too long ago....
posted by um_maverick on Jul 14, 2010 - 25 answers

The area under the curve of the obesity epidemic is my future?

Help me find a career path or course of study that combines the topic I'm interested in (obesity and public health) with the methods I enjoy (applied math and computer science). [more inside]
posted by telegraph on Jul 12, 2010 - 9 answers

How can laptops for every high school student be beneficial?

I am a teacher at a high school that will be providing netbooks to every single student this fall. I am trying to consider ways that this will be helpful in the classroom, particularly in a math classroom. If you knew that every child in the classroom had their own netbook and the classroom were wireless, what would you like to see happen that would help students learn math? Please fire away ideas. All are welcome - whether brainstorm ideas or maybe you know of a particular website or web-based tool that would help students. Particularly, I'd like to assess students' progress as they learn as well as to provide them multiple ways to learn/experience the fundamental concepts in a math course. What would YOU have wanted if you had a laptop and wireless in high school? Thanks for your suggestions!!!
posted by mathmatters on Jul 10, 2010 - 21 answers

You know I actually do this in my head when I am not interviewing

Metafilter: Would you help me write this thank you letter? More details inside. [more inside]
posted by The1andonly on Jun 29, 2010 - 4 answers

Buy or finance using borrowed money?

Math nerds, help! I need to figure out what's the better option for acquiring a car using borrowed money. [more inside]
posted by greatgefilte on Jun 22, 2010 - 10 answers

Programming and Math.

I've started learning to program and I'm enjoying it well enough, but I'm not fantastic at math. Do I have a future as an employable programmer? [more inside]
posted by lekvar on Jun 21, 2010 - 28 answers

I am three times dumber than you not to know this already

Saying "it's three times less" seems nonsensical to me. Please enlighten me. [more inside]
posted by not that girl on Jun 17, 2010 - 27 answers

Strang Theory

What is the difference between Gilbert Strang's two linear algebra textbooks? [more inside]
posted by scose on Jun 9, 2010 - 5 answers

Figuring interest at a per-month rate, compounded monthly

Mathfilter: How do I figure the total value of interest at a per-month rate, compounded monthly, with monthly contributions? [more inside]
posted by AV on Jun 9, 2010 - 17 answers


I need to pay for my new house and anticipated Reno's. Canada's lending laws put a limit on the minimum down payment I need without penalty, and the minimum I can take from my retirement savings without penalty. The two limits don't mesh for me! Help me decide the best way to patch together the money. [more inside]
posted by Popular Ethics on Jun 6, 2010 - 18 answers

What happened to the 70mpg car I was promised as a child?

Does anyone else remember the textbook I am thinking of from the late 1980's? [more inside]
posted by Yellowbeard on May 30, 2010 - 6 answers

where to study science and mathematics online?

What are the best places to study science and mathematics subjects for university credit online? [more inside]
posted by compound eye on May 24, 2010 - 3 answers

Help me publish a calculus textbook.

I want to eventually publish a high school / college level math textbook, but I have no idea what I'm doing. [more inside]
posted by anonymous on May 19, 2010 - 6 answers

Starting a math minor. Any advice?

I'm half way through college and am about to begin taking courses for my math minor. However, the last time I took an invasive course on mathematics was during high school. I am looking for a couple textbooks/methods that will help me get up to Calc II proficiency by the end of this summer. Specifically, I need to tune up my Precalculus and Calc I skills. If anyone could recommend problem sets, online tools, and/or their favorite textbooks I would greatly appreciate it. I'd like to keep it under $100. Thanks. ~Stephen
posted by Steve073190 on May 14, 2010 - 6 answers

An awesome vector geometry teaching website

I'm trying to find a website that teaches vector mathematics in lesson form. [more inside]
posted by giggleknickers on May 3, 2010 - 2 answers

Regular tessellations of Euclidean spaces

MathFilter: Is there a relationship between the number of dimensions in a Euclidean space and the number of regular tessellations of that space? [more inside]
posted by jedicus on May 2, 2010 - 10 answers

the maths, get them in my head

I need to learn Calculus II over the summer. I won't be able to take summer courses. I need to be ready to take differential equations in the fall. Hope me! [more inside]
posted by spikeleemajortomdickandharryconnickjrmints on Apr 28, 2010 - 11 answers

How do I go about finding a plateau within a set of numbers?

How do I go about finding a plateau within a set of numbers? [more inside]
posted by SamuelF on Apr 23, 2010 - 21 answers

ount all the ways that 15 objects can be put into four piles so that each pile has a different number of objects in it.

"Count all the ways that 15 objects can be put into four piles so that each pile has a different number of objects in it." Is there a smart general method for solving problems like this? Feel free to assume uniqueness/non-emptiness of the piles if it helps. (Not homework)
posted by onalark on Apr 20, 2010 - 18 answers

Seeking advice/help about statistical tests of significance.

I have a wonderfully large dataset that I'm working with for a long-term project. I am analyzing a small section the dataset for my masters thesis. In meeting with my thesis advisor last week, she suggested I run some statistical tests of significance on the 4 tables I'm working with. She knows that I am yet to be versed in quantitative analysis methods (I've done solely qualitative work thus far) and that I'm under a massive time crunch to get this done. She suggested I seek help from others, as she doesn't want me to get bogged down with figuring out this step, and would rather I concentrate on analyzing the other aspects of this data. To this end, I'm wondering if somebody might be able to suggest the best type of test of significance to run, the easiest way to run it, and a good, simple resource for what the resultant values mean? [more inside]
posted by iamkimiam on Apr 17, 2010 - 19 answers

What books should I buy my math professors?

I recently applied to grad schools, and I got recommendations from three of my math professors. I'd like to get them all books as a "thank you" but I'm stumped on which specific titles to get two of them. The books don't have to be overtly math-related (thought it wouldn't hurt), but I think they probably shouldn't be completely orthogonal. If it helps, the book that I did buy is Michael Ruhlman's latest food book Ratio. [more inside]
posted by cybertaur1 on Apr 15, 2010 - 14 answers

Math PhD with trouble getting academic job in US. What next?

I'm getting a PhD in math (very soon!) and having trouble getting a job. Help? [more inside]
posted by madcaptenor on Apr 12, 2010 - 31 answers

Canadian calculus

Mathfilter. Two part question. Bonus: involves hockey and beer! [more inside]
posted by raider on Apr 9, 2010 - 26 answers

The mathematics of Social Systems Dynamics Research.

Assuming that I am going to be pursuing a PhD in mathematical sociology, applied mathematics, or organizational analysis with no background in higher math with only the resources to take a few classes at the local college how do I go about it? More info and 3 specific questions inside. [more inside]
posted by elationfoundation on Apr 6, 2010 - 7 answers

What's higher level statistics like?

Math-related career advice requested: is work in higher level statistics compatible with an imaginative-type thinker or would it be total hell? [more inside]
posted by pinside on Apr 6, 2010 - 8 answers

1.25 APY vs 1.35 APY plus 10% bonus on interest earned

1.35 APY vs 1.25 APY + 10% quarterly bonus on interest earned. Help me understand which is better. [more inside]
posted by danny the boy on Apr 2, 2010 - 6 answers

What do you love about zero?

My favorite number is 0. I have many reasons for this, but I want more. [more inside]
posted by junipero on Apr 1, 2010 - 38 answers

Silly math Q

Dumb math question: is there any useful relationship between numbers a, b, and the function a*(a/b)?
posted by xmutex on Mar 31, 2010 - 10 answers


Is there a closed-form method for finding the unique subsets from the power set of prime factors of an integer? [more inside]
posted by Blazecock Pileon on Mar 27, 2010 - 9 answers

ISO Ramanujan's high-res handwriting.

Can someone help me get high-res scans of Ramanujan's notebooks? [more inside]
posted by wemayfreeze on Mar 26, 2010 - 6 answers

I am sick of having to say "I'm not good at math."

I have always had difficulty with mathematics. Now I'm in my mid-thirties and have gone back to school to study engineering. Things are not going appreciably better than they did the first time I went to university. What can I do to fill the gaps I have and become a skilled problem-solver? I want to go from being a C to being an A student. [more inside]
posted by rhombus on Mar 24, 2010 - 30 answers

What curriculum/books should I follow to teach 2 students one in the 7th grade and one in 8th grade that are homeschooling?

What curriculum/books should I follow to teach 2 students one in the 7th grade and one in 8th grade that are homeschooling? [more inside]
posted by minsid on Mar 17, 2010 - 14 answers

What should I ask at a gaming industry interview?

So, I've got an extensive set of interviews coming up for a math job in the gaming industry. (Video slots, in particular.) What are some gaming-industry-specific topics/questions I should be able to address/ask? [more inside]
posted by anonymous on Mar 12, 2010 - 6 answers

Disenfranchised math grad student seeks direction

I'm a second-year math grad student and all I know is math -- but I want out. What are my options? [more inside]
posted by pewpew on Mar 7, 2010 - 22 answers

How many pounds of muscle are needed to squat 200lbs?

For every pound of weight that I can squat, I have X pounds of muscle. What is the value of X? [more inside]
posted by Vorteks on Mar 5, 2010 - 12 answers

recommendations for great places to work

I'm looking for a job. Please recommend some great companies! My criteria: (1) nearly any industry, (2) they employ people to engage in creative qualitative and quantitative problem solving. Many more details inside. [more inside]
posted by anonymous on Mar 4, 2010 - 12 answers

Higher Math Note Sheets Online?

HigherMathNotesFilter: Where to find one- to three-page review/note sheets for math topics (vector calculus, linear algebra, differential equations, number theory...)? [more inside]
posted by sninctown on Mar 4, 2010 - 16 answers

Do we have to know Cramer's rule for the exam?

Why do people care about Cramer's rule? [more inside]
posted by leahwrenn on Mar 3, 2010 - 8 answers

Look out, Tiger Woods, here I come!

What kind of math am I using when I'm playing Wii golf? More specifically, when I get a hole in one. [more inside]
posted by Grlnxtdr on Feb 20, 2010 - 11 answers

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