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Real Life Math: How could raising everyone's grade on one quiz result in some people getting a lower grade average for all the quizzes for some students? [more inside]

posted by Ideal Impulse on Jun 5, 2011 - 6 answers

posted by Ideal Impulse on Jun 5, 2011 - 6 answers

My fiancee needs some work, preferably from home. Math background, no telephone calling. Any leads? [more inside]

posted by Pontifex on Jun 3, 2011 - 8 answers

posted by Pontifex on Jun 3, 2011 - 8 answers

Primary school gets out tomorrow. I know it is common for kids to have a "summer slide" where they forget a lot of what they've learned over the year. Recommend some fun math and science sites/projects/activities for elementary school age kids that will keep them refreshed and interested. [more inside]

posted by dejah420 on Jun 2, 2011 - 20 answers

posted by dejah420 on Jun 2, 2011 - 20 answers

Biologist needs recommendations on where to start learning the basics of HMMs. [more inside]

posted by Hutch on Jun 2, 2011 - 4 answers

posted by Hutch on Jun 2, 2011 - 4 answers

I'm looking for a graduation gift for a math and geology nerd. My best friend just got dual bachelor's degrees. She's going to grad school for geophysics in the fall. I know approximately zero about her areas of study and would like to get her something nice. [more inside]

posted by desjardins on May 26, 2011 - 15 answers

posted by desjardins on May 26, 2011 - 15 answers

How do I pick up mathematics...as an amateur hobby? [more inside]

posted by hal_c_on on May 22, 2011 - 21 answers

posted by hal_c_on on May 22, 2011 - 21 answers

Math and science geeks, does this fake equation make sense? 'delta' = c ... meaning "change is constant". [more inside]

posted by attercoppe on May 15, 2011 - 33 answers

posted by attercoppe on May 15, 2011 - 33 answers

Help me learn math for my CLEP test, please. [more inside]

posted by 3dd on May 15, 2011 - 10 answers

posted by 3dd on May 15, 2011 - 10 answers

What statistical analysis of historical prices would be useful for a buyer? [more inside]

posted by Theta States on May 12, 2011 - 1 answer

posted by Theta States on May 12, 2011 - 1 answer

I'm looking for an awesome, tactile, mathy gift for a friend of mine. Suggestions? [more inside]

posted by kaibutsu on May 12, 2011 - 27 answers

posted by kaibutsu on May 12, 2011 - 27 answers

I do not know math. I have a number, and I want to backwards engineer that number so I can arrive at it by adding some unknown amount and 13% of that unknown amount. Is there any way to figure this out besides trial and error?

posted by aunt_winnifred on Apr 14, 2011 - 6 answers

posted by aunt_winnifred on Apr 14, 2011 - 6 answers

Can you cite any examples where a technological breakthrough wasn't possible until there was some sort of mathematical breakthrough? [more inside]

posted by Brian Puccio on Apr 6, 2011 - 32 answers

posted by Brian Puccio on Apr 6, 2011 - 32 answers

I have a Master's in math, and would like to get a job in the tech industry or a laboratory, but my resume is very teaching-oriented. I would like tips on retooling it to make myself more attractive. I also have several months to improve my skills. [more inside]

posted by Earl the Polliwog on Apr 4, 2011 - 6 answers

posted by Earl the Polliwog on Apr 4, 2011 - 6 answers

How close is the horizon on the moon? On Mercury? On Mars? [more inside]

posted by curious nu on Apr 4, 2011 - 3 answers

posted by curious nu on Apr 4, 2011 - 3 answers

Calendar math question: today is March 25, 2011. I found my old watch in a drawer and the time is still correct, but the watch date window says 13. Assuming the date window repeats 1 to 31 and that I always 'set' my watch correctly, what was the most recent month and year that I could have worn it? [more inside]

posted by unixrat on Mar 25, 2011 - 11 answers

posted by unixrat on Mar 25, 2011 - 11 answers

Stupid math question:
How to solve (not trail and error) a problem set up like:
2x*3y=278
if
x+y=119
I am not sure what to call this type of problem so can not effectively google the steps. Not looking for an answer (per se) of the above problem, but the steps taken to solve it. [more inside]

posted by edgeways on Mar 24, 2011 - 14 answers

posted by edgeways on Mar 24, 2011 - 14 answers

Got into a debate with a friend regarding a math question - I think our debate reflects his misapplication of finite math reasoning to infinities, but I'm having trouble dredging up what I learned in set theory 10 years ago. Imagine you have a bag that has all of the real numbers from 0 to 2, let's say. What are the odds that if you reach into the bag you pull out a number between 0 and 1.5 ? 75%? 50%? Why? Depending on the answer to this I may have followup questions, but I'll leave it here for now. [more inside]

posted by slide on Mar 23, 2011 - 9 answers

posted by slide on Mar 23, 2011 - 9 answers

Multiple students taking an exam at different times come up with the same baffling answer. Help! [more inside]

posted by King Bee on Mar 21, 2011 - 24 answers

posted by King Bee on Mar 21, 2011 - 24 answers

Need help with some math: figuring out pipe lengths for a xylophone for my daughter's school project. [more inside]

posted by marble on Mar 18, 2011 - 13 answers

posted by marble on Mar 18, 2011 - 13 answers

What does it *mean* to raise a number to an imaginary power? [more inside]

posted by slappy_pinchbottom on Mar 16, 2011 - 29 answers

posted by slappy_pinchbottom on Mar 16, 2011 - 29 answers

Hey all, just a real quick discrete math induction question inside for anyone willing to help, thanks. [more inside]

posted by Benzle on Mar 14, 2011 - 7 answers

posted by Benzle on Mar 14, 2011 - 7 answers

Math/Optics: How can I derive the focal length of a lens from the magnification percentage of an image? [more inside]

posted by ScarletPumpernickel on Mar 13, 2011 - 10 answers

posted by ScarletPumpernickel on Mar 13, 2011 - 10 answers

I have a poetic, creative, intuitive brain. I feel out of my element talking to programmers, mathematicians, and physicists, yet I find their ideas aesthetically intriguing and I want to understand them. [more inside]

posted by xenophile on Mar 9, 2011 - 17 answers

posted by xenophile on Mar 9, 2011 - 17 answers

Any recommendations for a good graduate level text book for an introduction to mathematical finance course? [more inside]

posted by jeffburdges on Mar 8, 2011 - 1 answer

posted by jeffburdges on Mar 8, 2011 - 1 answer

I'm trying to express my love for a certain dessert in a math/logic formula.
I have this: **π > ∼π **, which I take to mean "Pi is greater than not Pi", and this: **π > ∞-π**, which I take to mean "Pi is greater than Everything but Pi". Do these make any sense or hold up in any legit way?

posted by TheCoug on Mar 5, 2011 - 15 answers

posted by TheCoug on Mar 5, 2011 - 15 answers

Post grad studies in Game Theory? Which universities have a focus in Game Theory? Are there Masters available for this?
Sorry for the grunt like presentation to my question. I just thought the abbreviated style would be best for a summary review of what I'm looking for.
Thanks!

posted by EricBrotto on Mar 1, 2011 - 6 answers

posted by EricBrotto on Mar 1, 2011 - 6 answers

The solution to 12 = x - (square root of x) is 16, but how do I manipulate the equation to show that? [more inside]

posted by Wanderboy on Feb 23, 2011 - 47 answers

posted by Wanderboy on Feb 23, 2011 - 47 answers

If I know the number of widgets, number of days, and total budget, can I break down a per widget price? [more inside]

posted by pencroft on Feb 22, 2011 - 10 answers

posted by pencroft on Feb 22, 2011 - 10 answers

Chemistry, math nerds, and smart people please help me with this cooking question involving salt. [more inside]

posted by*anonymous*
on Feb 20, 2011 -
13 answers

posted by

Should I pursue my interest and study college physics more? Specifically, should I take a year-long calculus-based program, until I get comfortable that I'm on top of it-- and can really judge my level of interest and aptitude fairly?
Considering I'm a Junior English major. Also considering that it's been 15 years since HS algebra and I've never been good at math. But I want to be. [more inside]

posted by reenka on Feb 10, 2011 - 31 answers

posted by reenka on Feb 10, 2011 - 31 answers

Help me arm myself for a future-determining showdown with calculus. [more inside]

posted by geneva uswazi on Feb 10, 2011 - 28 answers

posted by geneva uswazi on Feb 10, 2011 - 28 answers

A friend in college once mentioned a theorem for deciding the number of people to meet before deciding on the person to marry. Was it just a joke, or is there really such a theorem? [more inside]

posted by bleary on Feb 8, 2011 - 16 answers

posted by bleary on Feb 8, 2011 - 16 answers

if I'm looking through a library... does being published with Springer Verglag mean that the research is legit, and does being published with Nova Publishers mean that it isn't?

posted by moorooka on Jan 30, 2011 - 6 answers

posted by moorooka on Jan 30, 2011 - 6 answers

I've been asked to teach a week at a summer university. Help me to design the most awesome computer science/discrete math course ever. [more inside]

posted by mathemagician on Jan 27, 2011 - 7 answers

posted by mathemagician on Jan 27, 2011 - 7 answers

I have a series of tables describing a set of data and their values for certain points in time. I want to create a multi-line chart from this data so I can see the growth curves. Is there a name for this kind of plot? It must be a solved problem and some tools to do this but I can't google for it if I don't know the name of what I want. [more inside]

posted by rdhatt on Jan 26, 2011 - 7 answers

posted by rdhatt on Jan 26, 2011 - 7 answers

When doing mixed-operation arithmetic keeping significant figures, do you round after each operation- according to the rules for that particular step? Or do you keep everything in long-form calculator numbers, then round at the final answer? [more inside]

posted by tremspeed on Jan 25, 2011 - 21 answers

posted by tremspeed on Jan 25, 2011 - 21 answers

Please help me evaluate integrals more accurately. Sloppy calculus is killing me. [more inside]

posted by PFL on Jan 24, 2011 - 14 answers

posted by PFL on Jan 24, 2011 - 14 answers

Please refresh my memory with regard to a straightforward question of fair dice and probability. [more inside]

posted by Justinian on Jan 20, 2011 - 14 answers

posted by Justinian on Jan 20, 2011 - 14 answers

Math Filter: I am trying to find a name for this equation. I am not sure if I can solve it given the information that I currently have. [more inside]

posted by occidental on Jan 17, 2011 - 14 answers

posted by occidental on Jan 17, 2011 - 14 answers

Do the economics in Nick Spencer and Christian Ward's *Infinite Vacation* make sense? Are supply and demand meaningless concepts when an infinite multiverse is brought into the picture? [more inside]

posted by davextreme on Jan 12, 2011 - 9 answers

posted by davextreme on Jan 12, 2011 - 9 answers

Can someone give me some insight as to how to approach and make sense of mathermatical proofs? [more inside]

posted by Listener on Jan 11, 2011 - 30 answers

posted by Listener on Jan 11, 2011 - 30 answers

I'm about to start a 300-level Statistics course, but my math skills are very rusty. How can I quickly rejuvenate my old skills? [more inside]

posted by double block and bleed on Jan 8, 2011 - 5 answers

posted by double block and bleed on Jan 8, 2011 - 5 answers

Please explain this mathematics joke to me. [more inside]

posted by lazaruslong on Jan 5, 2011 - 21 answers

posted by lazaruslong on Jan 5, 2011 - 21 answers

I just failed my math class (a finance class). I'm smart at math but I don't handle organization well for math-related classes. How can I handle them classes better? [more inside]

posted by dubadubowbow on Dec 17, 2010 - 17 answers

posted by dubadubowbow on Dec 17, 2010 - 17 answers

Counting-Filter: A friend once asked me how many points the entire 52-card deck is worth in the game of Cribbage...not that you could actually be dealt the whole deck, but just a curiosity. [more inside]

posted by klausman on Dec 6, 2010 - 5 answers

posted by klausman on Dec 6, 2010 - 5 answers

I'm a pure mathematician with a Ph.D. and I'm currently a visiting professor at a large state university. However, I'm looking to switch gears and get into the quantitative finance field. The problem is that I don't know anything at all about finance. I know that there are companies such as D. E. Shaw that hire mathematicians that don't have financial experience; what other companies should I look at? Is there any general advice you'd give someone in my position? Also, I have my Ph.D. from a well-regarded state school, but I'm not an Ivy-leaguer; does that put me at a disadvantage?

posted by Frobenius Twist on Nov 29, 2010 - 6 answers

posted by Frobenius Twist on Nov 29, 2010 - 6 answers

I have a learning disability (dyscalculia/mathematics disorder). Could I handle the formal language component of an undergrad Introduction to Logic class? [more inside]

posted by autoclavicle on Nov 23, 2010 - 19 answers

posted by autoclavicle on Nov 23, 2010 - 19 answers

When do I look for non-academic jobs if I'm trying to transition out of academia, and which jobs do I look for? (I have a math PhD.) [more inside]

posted by madcaptenor on Nov 20, 2010 - 18 answers

posted by madcaptenor on Nov 20, 2010 - 18 answers