[mathfilter] please give me some example algebraic structures that are not commutative, with exotic identity values.
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posted by knz
on Apr 8, 2013 -
5 answers
Can a transcendental number such as pi, be raised to an irrational, but algebraic power resulting in an algebraic solution? Complex solutions would be acceptable. There might be a quick proof here, or there might not be. - Thanks for any help you can offer answering this! (And I promise that this isn't for a class or anything like that!)
posted by ch3cooh
on Mar 2, 2013 -
3 answers
I can't seem to wrap my mind around the language of higher level math. Definitions, theorems, and proofs make me fall asleep, but I really do want to understand. Do you know of any good resources that can help me out?
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posted by lucia_engel
on Jan 31, 2013 -
19 answers
I just finished my first course in Linear Algebra. I know a fair amount of Python. Please help me come up with a project that combines the two.
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posted by lobbyist
on Dec 23, 2012 -
11 answers
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.
posted by goosechasing
on Aug 30, 2012 -
11 answers
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.
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posted by Ookseer
on Aug 13, 2012 -
7 answers
Which are the best online courses for studying algebra and progressing up to trig, calculus, and differentials?
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posted by crapmatic
on Feb 19, 2012 -
14 answers
This is pretty straightforward algebra/chemistry which is why I'm embarrassed to ask my co-workers to help me so...
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posted by Katine
on Jan 5, 2012 -
8 answers
Mathfilter: In Gelfand's exceptional
Algebra text, he is talking about the formula 1 + x + x^2 + x^3 + ... = 1/(1 - x). He uses the Achilles racing the tortoise model when first introducing the formula. He discusses the case x = 10, whence 1 + 10 + 100 + 1000 + ... = -1/9.
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posted by wittgenstein
on Jul 27, 2011 -
8 answers
I am redesigning a high-school Algebra course so as to make it more meaningful to the students. To that extent, I am trying to gather as many examples throughout our world of linear relationships. I was hoping to tap into the collective wisdom of this group to come up with as long a list as possible of linear relationships that actually exist (not contrived stuff). I once knew a teacher who had a plant that grew at a linear rate. I don't know the type of plant, however. And there are so many other linear relationships around us. I don't want everything they see be about a car's distance from home or the amount of money they saved. What do you know of that exhibits a linear relationship? I'd love to have a long list for students so that they see that studying linear relationships in Algebra really does matter. Thanks for any help in making this course more worth while to the students!
posted by mathmatters
on Jul 21, 2011 -
16 answers
My son, who is finishing up third grade, loves math and especially the basic Algebra he's been doing. He is actually sad to be leaving school for the summer because he's so into it. How can I keep this going for him over the summer? Fun books, board games, computer (on-line and OSX) games?
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posted by bondcliff
on Jun 8, 2011 -
42 answers
I am a GIS college student looking to develop my skills in programming, particularly in Python. For starters, I need to wake up my dormant math skills. What mathematics-for-programmers books, or general Computer Science books, should I be looking for?
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posted by ajax287
on Apr 10, 2011 -
9 answers
Multiple students taking an exam at different times come up with the same baffling answer. Help!
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posted by King Bee
on Mar 21, 2011 -
24 answers
The solution to 12 = x - (square root of x) is 16, but how do I manipulate the equation to show that?
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posted by Wanderboy
on Feb 23, 2011 -
47 answers
MathStoryProblem: I coach youth bball and need help with equal playing time substitutions with a line-up that varies week to week. I think some kind of formula or counting trick should help, but my math skills are failing me. Up to 15 kids, 10 substitutions per game (25 min halves - subs every 5 min). As close to equal amount of floor time as possible (obviously, this can't always be the case).
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posted by ten year lurk
on Feb 23, 2011 -
6 answers
Warning: wait to read this question until tomorrow if you are in Learned League.
So, today one of the Learned League questions was, What is the y-intercept of the line with the following equation?: 3y-11x = 39. I couldn't get any further than y = 13 + 3 2/3 x or y = 13 +3.66666x. Actually it appears the response is 13. How does one get to the right response for this question?
posted by bearwife
on Nov 19, 2010 -
12 answers
But Sir, what is x? Teaching students algebra for the first time. They keep wanting to put values in for x, and write that down.
E.g. x + x = . Becomes 1 + 1 = 2, in their books. Whereas I want x + x = 2x.
Does anyone have any strategies, or techniques to overcome this?
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posted by 92_elements
on Nov 11, 2010 -
23 answers
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.
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posted by rhombus
on Mar 24, 2010 -
30 answers
Is it possible to solve for x in y=(x^t)/(x-1), for any value of t? Wolfram alpha and maxima failed, so I guess not, but I'm interested in what more general classes of unsolvable equations this falls in.
posted by jewzilla
on Feb 20, 2010 -
12 answers
What is the easiest way to calculate a location that is equidistant from three locations? (In this case: Baltimore, Chicago, Detroit)
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posted by sharkfu
on Jan 15, 2010 -
17 answers
So I'm tutoring my cousin in algebra. Specifically, 9th grade algebra. Even more specifically, in preparation for the
New York State Regents test in algebra. I'm 20 years older than he, and always found algebra pretty easy and straightforward. What tips do you have for a 34 year old tutor to a 14 year old who is struggling with algebra?
posted by dfriedman
on Nov 7, 2009 -
10 answers
I am having the hardest time working with positive and negative integers in elementary algebra. Please hope me.
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posted by hollygoheavy
on Oct 5, 2009 -
20 answers
Not Homework Filter! Paypal Filter: Paypal charges me 2.9% plus $0.30 for every transaction. Someone needs to pay me X. What is the formula to determine how much they need to send with paypal so I get X and not X - (X * 0.029) - 0.30?
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posted by arniec
on Oct 2, 2009 -
16 answers
Is there an easy-to-use computer program (other than TI Interactive) I can use to draw graphs of functions when I'm writing my Algebra 2 tests?
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posted by junipero
on Sep 15, 2009 -
6 answers
I need help with a math problem my sister-in-law has for homework. It involves adding and multiplying roots and it's been long enough since college that I don't quite remember how to do that. The question is: 3sq(5)[2sq(5)-5]. I did it two different ways, getting 15sq(5) once and 9sq(5) the next. Is either right? An answer would be appreciated and, moreover, an explanation as to how to do it. Thanks!
posted by dbooster
on Jun 10, 2009 -
7 answers
In need of some daily source of random math problems (upto basic calculus) that will reinforce or (if necessary) re-establish some real fundamental concepts in the algebra portions of calculus, unless something else might work.
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posted by JoeXIII007
on Feb 11, 2009 -
4 answers
I have a friend who is looking for an algebra tutor in the Los Angeles area. Anyone have experience with one or know how to find one?
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posted by Kimberly
on Jan 7, 2009 -
4 answers
I have a super-complicated algebraic equation I (somehow) developed as the solution to developing appropriate grid-based web design that has me completely stumped...
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posted by fauxtoes
on Oct 23, 2008 -
20 answers
Applied Math Filter: Help me use math!
I'd like to learn more about mathematics and it's practical applications - particularly in Computer Science
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posted by dcbarker
on Aug 1, 2008 -
13 answers
I need to brush up on my basic college math skills for a course readiness assessment in a week. What are some good resources online and what should I focus on?
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posted by baphomet
on Jun 17, 2008 -
4 answers
I tutor several people in a "Mathematics for the Social Sciences" course at a local university. This semester the material is focused on matrix algebra. For the most part, they have no trouble wrapping their heads around the notions of basic vector operations, row reduction, systems of equations, inverse matrices and determinants. But, they have a lot of problems with more abstract concepts such as linear independence, subspaces, basis and dimension. I'm wondering if anyone has any tips on helping them visualize and understand these ideas more clearly.
posted by Proginoskes
on Mar 30, 2008 -
7 answers
Anyone good with GAP? I've defined a largish permutation group and would like to make a tally of elements by cycle type - how many of each cycle type occurs in the group. Possible? Trivial? Use something else instead? Oh, and where's the
right place to ask GAP questions?
posted by Wolfdog
on Mar 9, 2008 -
1 answer
Color algebra: Given a color C, how do I pick a color F that will
be color C when against background color B at opacity N? How would I do the same thing for a color multiplication?
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posted by weston
on Feb 18, 2008 -
18 answers
Can someone please point me in the right direction to find practice test papers for Financial Accounting? (Balance Sheets, Income Statements, Statements of Returns on Equity, Cash Flow Statements, Depreciation, Ratios, etc. etc.)
Assorted business schools worries inside.
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posted by Zé Pequeno
on Oct 28, 2007 -
5 answers
I need to write a document with a lot of algebraic formulas. What word processor / page layout program would make this quickest and
easiest?
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posted by rolypolyman
on Jun 18, 2007 -
25 answers
I'm looking for textbook suggestions for teaching myself algebra and trigonometry. Are there any algebra textbooks that stand out as exceptionally good?
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posted by rolypolyman
on Feb 21, 2007 -
7 answers
