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Applications of Harmonic Motion
Now that we have established the theory and equations behind harmonic motion, we will examine various physical situations in which objects move in simple harmonic motion. Previously, we worked with a
mass-spring system, and will examine other harmonic oscillators in a similar manner. Fin... | {"url":"http://www.sparknotes.com/physics/oscillations/applicationsofharmonicmotion/section1.rhtml","timestamp":"2014-04-19T02:22:54Z","content_type":null,"content_length":"72992","record_id":"<urn:uuid:95719c34-0d2d-4aeb-9986-04f364a9758f>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-2014041600521... |
National Nanotechnology Infrastructure Network
PARSEC at NNIN
Pseudopotential Algorithms for Real Space Energy Calculations
The PARSEC package provides users with the ability to solve the electronic structure of confined systems such as atomic clusters, molecules, and quantum dots by using a real space approach. The
cu... | {"url":"http://www.nnin.org/parsec-nnin","timestamp":"2014-04-24T00:45:05Z","content_type":null,"content_length":"24102","record_id":"<urn:uuid:072d3c36-8ab7-472d-b45a-7f3a5b208914>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00094-ip-10-147-4-33.ec2.internal.warc.gz"} |
Patent US3484746 - Adaptive pattern recognition system
m. 36, W69 5. c. FRALICK T AL 3,434,746
ADAPT IVE PATTERN RECOGNITION SYSTEM 9 Sheets-Sheet 1 Filed Jan. 11, 1965 DECISION CIRCUIT LIKELI HOOD PROBABILITY COMPUTER COMPUTER LIKELIHOOD TIME i WH IT mlrmw k OAS TR S W NFX E O QN J N K. E Y
.N Evns m MN T AHN T T E MA... | {"url":"http://www.google.cl/patents/US3484746","timestamp":"2014-04-17T06:45:55Z","content_type":null,"content_length":"120210","record_id":"<urn:uuid:1ae8b953-a2ca-4e35-b94d-d90ba720146f>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00265-ip-10-147-4-33.ec2.internal.warc.gz"} |
You are here: Home → Online resources → Math history
Math history
Math history
History Topics Index from the MacTutor history of Mathematics archive
An extensive list of essays about math history.
Math History Timeline
Timeline... | {"url":"http://www.homeschoolmath.net/online/math_history.php","timestamp":"2014-04-19T09:27:26Z","content_type":null,"content_length":"23590","record_id":"<urn:uuid:7365d1f1-3ac1-4f47-9bc0-5c603bd129ee>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00126-ip-10-147-4-33.ec2.internal.... |
Benoît's Fractals
Benoît’s Fractals
Mandelbrot set
Benoît Mandelbrot passed away a few dayes ago on October 14, 2010. Since 1987, Mandelbrot was a member of the Yale’s mathematics department. This chapterette from my book “Gina says: Adventures in
the Blogosphere String War” about fractals is brought here on this sad... | {"url":"http://gilkalai.wordpress.com/2010/10/17/fractals/?like=1&source=post_flair&_wpnonce=671450efa2","timestamp":"2014-04-21T02:17:13Z","content_type":null,"content_length":"112095","record_id":"<urn:uuid:7744c618-c0f7-41a1-86ee-1af2c74483f4>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-201404... |
Mc Cook, IL Math Tutor
Find a Mc Cook, IL Math Tutor
...During my two and half years of teaching high school math, I have had the opportunity to teach various levels of Algebra 1 and Algebra 2. I have a teaching certificate in mathematics issued by
the South Carolina Department of Education. During my two and a hal... | {"url":"http://www.purplemath.com/Mc_Cook_IL_Math_tutors.php","timestamp":"2014-04-21T12:46:25Z","content_type":null,"content_length":"23813","record_id":"<urn:uuid:9a06efab-c124-4d15-aef4-b863341c13e1>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00392-ip-10-147-4-33.ec2.internal.wa... |
Havertown Science Tutor
Find a Havertown Science Tutor
...I am a patient, flexible, and encouraging tutor, and I'd love to help you or your child gain confidence and succeed academically. I adapt my teaching style to students' needs, explaining
difficult concepts step by step and using questions to "draw out" stude... | {"url":"http://www.purplemath.com/havertown_science_tutors.php","timestamp":"2014-04-20T09:02:44Z","content_type":null,"content_length":"23623","record_id":"<urn:uuid:233680e0-3f5c-488c-acf2-18e9fdd19f37>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-20140423032005-00397-ip-10-147-4-33.ec2.internal.... |
Gardena Algebra Tutor
...Repetition is key! Once a concept becomes second nature, other layers can be added on to deepen the knowledge in a subject. For the tougher subjects, especially math, I like to put things into
simple terms.
14 Subjects: including algebra 1, algebra 2, calculus, physics
I am a student at... | {"url":"http://www.purplemath.com/Gardena_Algebra_tutors.php","timestamp":"2014-04-18T13:58:01Z","content_type":null,"content_length":"23495","record_id":"<urn:uuid:99e74517-f97e-40c3-8c00-2509a47a10bf>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00217-ip-10-147-4-33.ec2.internal.w... |
Phase relation between current and electromagnetic field generated
From Maxwell's Equations, for a time-harmonic field the electric field it appears that it may lead the current by 90 degrees since the time derivative of the electric field is equal to the curl of
the magnetic field and the source current. But this is o... | {"url":"http://www.physicsforums.com/showthread.php?p=4262352","timestamp":"2014-04-17T15:43:24Z","content_type":null,"content_length":"24872","record_id":"<urn:uuid:1666a6c6-dac4-4da0-9f53-6d2021add3ec>","cc-path":"CC-MAIN-2014-15/segments/1397609530136.5/warc/CC-MAIN-20140416005210-00478-ip-10-147-4-33.ec2.internal.w... |
triangle problem
August 15th 2008, 06:59 PM #1
triangle problem
see the picture attaced and many thanks to people who will help me solve this problem and the other problems I have posted before. I really appreaciate the contributors very much.I give thanks to
everyone that answer to my question
Last edited ... | {"url":"http://mathhelpforum.com/geometry/46049-triangle-problem.html","timestamp":"2014-04-20T18:01:13Z","content_type":null,"content_length":"34231","record_id":"<urn:uuid:f2e0a545-edf0-42e8-854c-19d948bf3c09>","cc-path":"CC-MAIN-2014-15/segments/1397609538824.34/warc/CC-MAIN-20140416005218-00029-ip-10-147-4-33.ec2.i... |
circle bundle
circle bundle
Classes of bundles
Universal bundles
Examples and Applications
Special and general types
Special notions
A circle bundle is a principal bundle for the circle group $S^1$. Equivalently this is a $U(1)$-principal bundle, for the unitary group $U(1)$.
Under the canonical representation $\mathbf... | {"url":"http://ncatlab.org/nlab/show/circle+bundle","timestamp":"2014-04-20T20:57:02Z","content_type":null,"content_length":"36047","record_id":"<urn:uuid:8e97948a-11a2-4bb3-b1f5-420b30661d60>","cc-path":"CC-MAIN-2014-15/segments/1397609539230.18/warc/CC-MAIN-20140416005219-00406-ip-10-147-4-33.ec2.internal.warc.gz"} |
Math Forum Discussions
Math Forum
Ask Dr. Math
Internet Newsletter
Teacher Exchange
Search All of the Math Forum:
Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.
Topic: [math-learn] The Effective But Forgotten Benezet Method of K-8 Education
Replies: 4 Last Post: Sep 3, 2... | {"url":"http://mathforum.org/kb/thread.jspa?threadID=2399794&messageID=7883540","timestamp":"2014-04-17T13:02:15Z","content_type":null,"content_length":"24289","record_id":"<urn:uuid:7f4e45ad-3883-4d82-bc1c-bd6b188972bc>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00589-ip-10-147-4... |
LTPP Guide to Asphalt Temperature Prediction and Correction
The AREA basin shape factor is essentially the result of numerically integrating a normalized deflection basin. When the AREA factor was first developed, test equipment generally had only four
deflection sensors, which were typically spaced at one-foot interva... | {"url":"http://www.fhwa.dot.gov/publications/research/infrastructure/pavements/ltpp/fwdcd/area.cfm","timestamp":"2014-04-18T16:13:22Z","content_type":null,"content_length":"16995","record_id":"<urn:uuid:a7bc92b0-bbee-42ff-a903-2a6f31df5761>","cc-path":"CC-MAIN-2014-15/segments/1397609533957.14/warc/CC-MAIN-201404160052... |
Video Library
Since 2002 Perimeter Institute has been recording seminars, conference talks, and public outreach events using video cameras installed in our lecture theatres. Perimeter now has 7 formal presentation
spaces for its many scientific conferences, seminars, workshops and educational outreach activities, all w... | {"url":"http://perimeterinstitute.ca/video-library?title=&page=580","timestamp":"2014-04-19T15:00:32Z","content_type":null,"content_length":"69253","record_id":"<urn:uuid:3d7789da-136f-4624-a0c0-51d06b0d1eaf>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00038-ip-10-147-4-33.ec2.inter... |
Hello...newbie wants to learn how to make a really cool math puzzle.
Re: Hello...newbie wants to learn how to make a really cool math puzzle.
Hi AdamKralic
Welcome to the forum!
Excuse me for asking,but where are you from? It's okay if you don't want to say.
Last edited by anonimnystefy (2012-05-05 02:25:25)
The limit ... | {"url":"http://www.mathisfunforum.com/viewtopic.php?pid=217016","timestamp":"2014-04-19T14:37:04Z","content_type":null,"content_length":"18673","record_id":"<urn:uuid:4e6633ca-0a4e-4d67-aa9c-8b368cfd2c8a>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00202-ip-10-147-4-33.ec2.internal.... |
my slice of pizza
Stochastic Data Streams
I am revisiting the area of streaming algorithms, and thought I will use the MFCS talk to push in a new direction. These days, I do research like cows chew their cud: I swallow an idea or a thought
as it pops up during the busy day, and much later, when I have time, say during ... | {"url":"http://mysliceofpizza.blogspot.com/2009/08/stochastic-data-streams.html","timestamp":"2014-04-17T21:23:43Z","content_type":null,"content_length":"23663","record_id":"<urn:uuid:8ec1e1a6-3c88-45b7-a6dc-342c8b801eb4>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00074-ip-10-147-... |
Well Ordering
September 6th 2010, 11:23 AM #1
Senior Member
Apr 2009
Well Ordering
Define a well-ordering relation R on the set of rationals: $S = \{x = \frac{3^n \times 7^m}{11^t} \text{for integers n, m, t} \ge 1\}$
So using the definition of well-ordering from wikipedia, "a well-order relation on a set S... | {"url":"http://mathhelpforum.com/discrete-math/155373-well-ordering.html","timestamp":"2014-04-20T20:01:03Z","content_type":null,"content_length":"66438","record_id":"<urn:uuid:97ff0ff7-fddf-4a2e-8a52-06d49cea4cab>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00333-ip-10-147-4-33.ec... |
Vector spaces.
A vector is a mathematical object with both magnitude and direction. This much should be familiar to you all. Consider the Cartesian plane, with coordinates x and y. Then any vector here can be
specified by v = ax + by, where a and b are just numbers that tell us the projection of v on the x and y axes r... | {"url":"http://www.mathisfunforum.com/viewtopic.php?pid=68782","timestamp":"2014-04-20T21:27:41Z","content_type":null,"content_length":"40104","record_id":"<urn:uuid:6c8d0672-43ee-42a0-98f6-b26908bfe75d>","cc-path":"CC-MAIN-2014-15/segments/1397609539230.18/warc/CC-MAIN-20140416005219-00354-ip-10-147-4-33.ec2.internal.... |
Tight and taut immersions
From Encyclopedia of Mathematics
The total absolute curvature Immersion of a manifold) is expressed as an integral (a2) in terms of local invariants. It obeys
Here Betti number for Čech homology with Čech cohomology).
For a closed curve, surface Gaussian curvature, Euler characteristic of
The ... | {"url":"http://www.encyclopediaofmath.org/index.php/Tight_and_taut_immersions","timestamp":"2014-04-17T09:39:34Z","content_type":null,"content_length":"61585","record_id":"<urn:uuid:2245753d-99f8-4fbd-8883-8c8f2f8c49a7>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00405-ip-10-147-4-... |
El Granada Precalculus Tutor
Find an El Granada Precalculus Tutor
...I am very effective in helping students to not just get a better grade, but to really understand the subject matter and the reasons why things work the way they do. I do this in a way that is
positive, supportive, and also fun. I explain difficult... | {"url":"http://www.purplemath.com/El_Granada_Precalculus_tutors.php","timestamp":"2014-04-21T07:13:43Z","content_type":null,"content_length":"24142","record_id":"<urn:uuid:8028511c-5d12-4a72-b797-68df64a3fc4a>","cc-path":"CC-MAIN-2014-15/segments/1397609539665.16/warc/CC-MAIN-20140416005219-00538-ip-10-147-4-33.ec2.int... |
How to Do Your Algebra Homework Using Online Tools
Edit Article
Edited by Annie, Teresa, Maluniu, Tangy Tom and 5 others
Having trouble in your Algebra homework? Don't know how to solve the math problem in front of you? No one to contact for help and assistance? No more worries starting today! Using this genius Algebra... | {"url":"http://www.wikihow.com/Do-Your-Algebra-Homework-Using-Online-Tools","timestamp":"2014-04-16T19:07:36Z","content_type":null,"content_length":"64886","record_id":"<urn:uuid:1742911c-fd3d-4030-9f22-615583951117>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00030-ip-10-147-4-33.... |
November 26th 2007, 03:41 PM
If $\bold{F}(x,y) = \frac{k(x \bold{i} + y \bold{j})}{x^{2}+y^{2}}$ find the work done by $\bold{F}$ in moving a unit charge along a straight line segment from $(1,0)$ to $(1,1)$.
So $\bold{F}(1,y) = \frac{k(\bold{i} + y \bold{j})}{1 + y^{2}}$. Then $x = 1, \ y = y$.
$k \int_{0}... | {"url":"http://mathhelpforum.com/advanced-applied-math/23557-work-print.html","timestamp":"2014-04-16T09:09:11Z","content_type":null,"content_length":"7012","record_id":"<urn:uuid:da80afb3-2440-491b-86bd-d3ea7054c3d2>","cc-path":"CC-MAIN-2014-15/segments/1397609521558.37/warc/CC-MAIN-20140416005201-00384-ip-10-147-4-33... |
Basic BSP Dungeon generation
From RogueBasin
A simple method to generate a basic dungeon using a bsp tree
Building the BSP
We start with a rectangular dungeon filled with wall cells. We are going to split this dungeon recursively until each sub-dungeon has approximately the size of a room. The dungeon splitting uses th... | {"url":"http://www.roguebasin.com/index.php?title=Basic_BSP_Dungeon_generation","timestamp":"2014-04-18T03:05:10Z","content_type":null,"content_length":"14337","record_id":"<urn:uuid:375cb1b3-93cd-4b21-878e-bc0a2a416abe>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00163-ip-10-147-4... |
Lower bounds for Petersson inner products of cuspforms with integral Fourier coefficients
up vote 1 down vote favorite
Let $N\geq 1$ be an integer and let $S_2(\Gamma_0(N))$ be the cusp forms of weight 2 for the usual congruence subgroup $\Gamma_0(N)\subset SL_2(\mathbb Z)$. Let $a_n(f)$ denote the n-th Fourier
coeffic... | {"url":"http://mathoverflow.net/questions/126969/lower-bounds-for-petersson-inner-products-of-cuspforms-with-integral-fourier-coe/126976","timestamp":"2014-04-17T04:29:33Z","content_type":null,"content_length":"64208","record_id":"<urn:uuid:7e1d459c-77d7-4b26-a069-521ae2d3f454>","cc-path":"CC-MAIN-2014-15/segments/1397... |
st: RE: Interpretting coefficinets in a fractional logit model?
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st: RE: Interpretting coefficinets in a fractional logit model?
From "Verkuilen, Jay" <JVerkuilen@gc.cuny.edu>
To <statalist@hsphsun2.harvard.edu>
Subject st: RE: Interprett... | {"url":"http://www.stata.com/statalist/archive/2008-04/msg00336.html","timestamp":"2014-04-20T11:33:49Z","content_type":null,"content_length":"6405","record_id":"<urn:uuid:81933d55-194a-497f-8f21-c7ed28a52d97>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00344-ip-10-147-4-33.ec2.int... |
CGTalk - Ring conforms to the circumference of sphere
12-08-2008, 09:37 AM
Not a script question per say but a math related one.
1. a sphere of radius: 100
2. a circle shape of radius: 100
3.I align the circle to the sphere
I want the circle to start with radius 100 and when i take it(or animate) down to the bottom of ... | {"url":"http://forums.cgsociety.org/archive/index.php/t-705408.html","timestamp":"2014-04-17T13:08:58Z","content_type":null,"content_length":"6755","record_id":"<urn:uuid:141dd0bd-4e32-4e0d-a219-32a50cfc6bc5>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00312-ip-10-147-4-33.ec2.inte... |
What is the advantage of a one-tailed test over a two-tailed - JustAnswer
Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
Hi there! I'm working on your questions now. Will be back shortly with your answers. Do you have a hard dead... | {"url":"http://www.justanswer.com/homework/7u3jz-advantage-one-tailed-test-two-tailed.html","timestamp":"2014-04-19T12:57:09Z","content_type":null,"content_length":"89993","record_id":"<urn:uuid:d53e49f4-5872-49c9-88e9-4f707e397bc3>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00654... |
Do We Need a 37-Cent Coin?
Dubner thinks we should do away with the penny.
A young economist I know, Patrick DeJarnette, believes a much more radical change in currency is warranted. Here is what Patrick writes:
Late one night I was curious how efficient the “penny, nickel, dime, quarter” system was, so I wrote a l... | {"url":"http://freakonomics.com/2009/10/06/do-we-need-a-37-cent-coin/","timestamp":"2014-04-17T16:54:49Z","content_type":null,"content_length":"74640","record_id":"<urn:uuid:2e45f891-28b0-4dba-ac89-3514a7c5eccc>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00195-ip-10-147-4-33.ec2.in... |
Math Help
February 17th 2011, 12:07 PM #1
Senior Member
Apr 2008
Which of the following are sets are subrings of the field R of real numbers?
a) A={m+n(2)^(1/2)|m,n in the integers and n is even}
b)B={m+n(2)^(1/2)|m,n in the integers and m is odd}
c)C={a+b(2)^(1/3)|a,b in the rationals}
d) D={a... | {"url":"http://mathhelpforum.com/advanced-algebra/171628-subrings.html","timestamp":"2014-04-19T12:19:22Z","content_type":null,"content_length":"51604","record_id":"<urn:uuid:0d6134f9-f926-4623-93cd-8955d030083e>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00031-ip-10-147-4-33.ec2.... |
affine geometry
The study of properties of geometric objects that remain unchanged after parallel projection from one plane to another. During such a projection, first studied by Leonhard Euler, each point (x, y) is
mapped to a new point (ax + cy + e, bx + dy + f). Circles, angles, and distances are altered by affine t... | {"url":"http://www.daviddarling.info/encyclopedia/A/affine_geometry.html","timestamp":"2014-04-18T08:47:16Z","content_type":null,"content_length":"6243","record_id":"<urn:uuid:b49ca685-bb6a-4d7f-b9de-5612280500a0>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00490-ip-10-147-4-33.ec2... |
Mplus Discussion >> Multiple group factor invariance
Jennifer Rose posted on Friday, December 23, 2005 - 8:07 am
I've conducted a multiple group analysis testing factor loading invariance across 2-3 groups using a 2 factor CFA with MLM estimation. The corrected chi-square difference test comparing this
constrained mode... | {"url":"http://www.statmodel.com/discussion/messages/9/967.html?1381348389","timestamp":"2014-04-17T12:53:00Z","content_type":null,"content_length":"96337","record_id":"<urn:uuid:3a7fffcb-769d-4707-9fc7-c50a2f084773>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00287-ip-10-147-4-33.... |
Pololu - Know your units
How many volts of current are there in a bolt of lightning? That’s the kind of stupid question your local news anchor might ask while bantering with the weather guy. Perhaps your favorite
cringe-inducing unit abuse is someone thinking light-years measure time or a model rocket enthusiast tellin... | {"url":"http://www.pololu.com/blog/3/know-your-units","timestamp":"2014-04-17T10:19:46Z","content_type":null,"content_length":"40397","record_id":"<urn:uuid:36e5a241-1d83-4805-964e-7bc194522311>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00191-ip-10-147-4-33.ec2.internal.warc.gz"} |
Ketan Mulmuley Responds
Someone pointed out to me your
where it is stated that, according to me, any approach to separate P from NP must go through GCT. This is not what I think or said. One cannot really say that GCT is the only way to separate P from
NP or that any approach must go through it. Indeed as the article (... | {"url":"http://blog.computationalcomplexity.org/2008/04/ketan-mulmuley-responds.html","timestamp":"2014-04-16T13:03:40Z","content_type":null,"content_length":"192506","record_id":"<urn:uuid:57524517-363a-4767-9b04-eb05a8eff4fa>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-00574-ip-1... |
Introduction to statistics
From Wikiversity
• 46% of people polled enjoy vanilla, while 54% prefer chocolate (+/-4% margin of error).
• A school's graduation rate has increased by 2%.
• A couple has 4 boys, and they are pregnant again: what is their chance of having another boy?
• 88% of people questioned feel ... | {"url":"http://en.wikiversity.org/wiki/Introduction_to_Statistics","timestamp":"2014-04-16T10:49:33Z","content_type":null,"content_length":"53897","record_id":"<urn:uuid:6331cded-5b45-4164-97d8-ae391f483462>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203-00466-ip-10-147-4-33.ec2.inter... |
problem solving
February 17th 2009, 09:06 PM #1
Jan 2009
problem solving
hey guys so im stuck again
the question is
A square has an area of 400cm2
what is the length of each side?
i know its pretty easy but im sort of clueless, thanks for any help, and i apologize if im in the wrong forum
Ar... | {"url":"http://mathhelpforum.com/math-topics/74209-problem-solving.html","timestamp":"2014-04-20T10:34:14Z","content_type":null,"content_length":"32285","record_id":"<urn:uuid:26448b65-c530-4703-ab06-c8d4ad8b4c44>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00653-ip-10-147-4-33.ec2.... |
Admissible Sets and Structures: An Approach to Definability Theory e-bookAdmissible Sets and Structures: An Approach to Definability Theory e-book
Admissible Sets and Structures: An Approach to Definability Theory e-book
Admissible Sets and Structures: An Approach to Definability Theory book download
J. Barwise
For ex-... | {"url":"http://pyyrbo.altervista.org/admissible-sets-and-structures-an-approach-to-definability-theory-e-book/","timestamp":"2014-04-17T09:33:56Z","content_type":null,"content_length":"16959","record_id":"<urn:uuid:985e54b5-fcd6-435f-881c-719b036e7859>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-... |
Shortest Path – Python
August 24, 2010 – 2:26 pm
Problem: Write a python function to calculate the shortest path given a start node (or vertex), an end node and a graph. Use Dijkstra’s algorithm. Return the distance from the start node to the end
node, as well as the path taken to get there.
The implementation below st... | {"url":"http://rebrained.com/?p=392","timestamp":"2014-04-19T07:59:16Z","content_type":null,"content_length":"25434","record_id":"<urn:uuid:bd01f1aa-887e-481f-9036-ecde2efe7d64>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00235-ip-10-147-4-33.ec2.internal.warc.gz"} |
Theorem 1 Help for Probability Concepts, Engineering - Transtutors
Probability of occurrence of an event is a number lying between 0and 1.
Let S be the sample space and E be an event.
Then Φ⊆ E ⊆n S
? n(Φ) < n(E) < n(S)
Or 0 < n(E) < n(S)
Or 0/n(S) < n(E) / n(S) < n(S) / n(S) [Dividing by n(S)]
Or 0 < P(E) < 1 [P(E) = ... | {"url":"http://www.transtutors.com/homework-help/mathematics/probability-concepts/theorem1.aspx","timestamp":"2014-04-18T08:13:29Z","content_type":null,"content_length":"83507","record_id":"<urn:uuid:72a7998d-fb27-41cf-9423-81289cbf1b72>","cc-path":"CC-MAIN-2014-15/segments/1397609533121.28/warc/CC-MAIN-20140416005213-... |
Properties of the Dirac point and Topological Insulators
I apologies for being to vague in my initial question, I think my confusion with the subject came through.
I'm aware of the dissipationless conduction of electrons in the surface state but I was hoping for an explanation of some of the other properties predicted ... | {"url":"http://www.physicsforums.com/showthread.php?s=443f0b2b5b60627d5498a5bfd0e6d26b&p=4631426","timestamp":"2014-04-16T04:21:38Z","content_type":null,"content_length":"32212","record_id":"<urn:uuid:e5f405a9-7c50-43ca-a727-c8c0832c8653>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011... |
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Miss Gil: Cares & Gets Results - Regents, SAT & NYS ELA & Math Exams
...have been tutoring for a while, and I really enjoy doing so. My students vary from Kindergarten through grade 12, as well as college students for
and Writing. I tutor a variety of subjects but mainly Mathematics an... | {"url":"http://www.wyzant.com/Cambria_Heights_Algebra_tutors.aspx","timestamp":"2014-04-24T10:25:46Z","content_type":null,"content_length":"59369","record_id":"<urn:uuid:e2f837e9-1ec3-4838-8ee2-b86e2af4661f>","cc-path":"CC-MAIN-2014-15/segments/1398223206118.10/warc/CC-MAIN-20140423032006-00444-ip-10-147-4-33.ec2.inter... |
Math Fail
1. Wolfram Alpha was down last night.
2. I got stuck in an infinite loop while using L’Hôpital’s rule.
3. I was computing the kernel of a matrix and got hungry for popcorn and ended up watching a movie instead.
4. I have a note from my doctor which proves I have dyscalculia.
5. I got an answer of 42 for eve... | {"url":"http://math-fail.com/page/139","timestamp":"2014-04-18T23:15:44Z","content_type":null,"content_length":"61270","record_id":"<urn:uuid:d1459eb1-f6f8-4e07-b1fb-bd6281004194>","cc-path":"CC-MAIN-2014-15/segments/1397609535535.6/warc/CC-MAIN-20140416005215-00201-ip-10-147-4-33.ec2.internal.warc.gz"} |
Mplus Discussion >> Missing on x-variable - solution?
Cristian Dogaru posted on Wednesday, August 06, 2008 - 2:59 pm
Dear Linda and Bengt,
I need an opinion on an x-variable missing problem.
In a model that I am running, an observed (x) variable greatly reduces the sample analyzed (combined with other x-variables, the ... | {"url":"http://www.statmodel.com/discussion/messages/22/3463.html?1390501775","timestamp":"2014-04-17T00:52:34Z","content_type":null,"content_length":"47449","record_id":"<urn:uuid:d624492c-29fa-4bde-8812-ee52296ce7a1>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00624-ip-10-147-4-33... |
Nuclear Structure and Dynamics at Short Distances
R. Ent
Jefferson Laboratory
G. A. Miller
University of Washington
M. Sargsian
Florida International University
J. P. Vary
Iowa State University
Program Coordinator:
Inge Dolan
(206) 685-4286
... | {"url":"http://www.int.washington.edu/PROGRAMS/13-52w/","timestamp":"2014-04-16T15:07:47Z","content_type":null,"content_length":"5167","record_id":"<urn:uuid:4a692cc0-2e09-4da5-8788-3c4ad89de27b>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-00264-ip-10-147-4-33.ec2.internal.warc.gz"... |
Post a reply
The function:
is very useful for calculating sums.
That's because:
If you want to calculate this:
, you may express the f(x) = x^i as:
where r(x) is the "remainder", which has less power than f(x).
Example for f(x)=x^1:
S_2 (x) = (x+1)^2-x^2=x^2+2x+1-x^2=2x+1
(S_2 (x))/2=x+1/2
f(x)=x^1=x=0.5 S_2(x) - 0.5 =... | {"url":"http://www.mathisfunforum.com/post.php?tid=3146&qid=31756","timestamp":"2014-04-16T18:57:56Z","content_type":null,"content_length":"21314","record_id":"<urn:uuid:c12f30bb-7230-4691-883c-ad3f28c40b80>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00230-ip-10-147-4-33.ec2.intern... |
Next | Prev | Up | Top | Index | JOS Index | JOS Pubs | JOS Home | Search
Generalized Scattering Coefficients
Generalizing the scattering coefficients at a multi-tube intersection (§C.12) by replacing the usual real tube wave impedance impedance
from Eq.C.149), or, as a special case, the conical-section wave impedance ... | {"url":"https://ccrma.stanford.edu/~jos/pasp/Generalized_Scattering_Coefficients.html","timestamp":"2014-04-18T06:09:46Z","content_type":null,"content_length":"10913","record_id":"<urn:uuid:c3b0bd31-695b-4102-8531-780635eb88c4>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-20140416005212-00039-ip-1... |
4aSA6. Scattering by elastic elliptical cylinders of different aspect ratio.
Session: Thursday Morning, May 16
Time: 9:30
Author: Jacques Lanfranchi
Author: Gerard Maze
Location: Lab. d'Acoust. Ultrason. et d'Electron., LAUE URA CNRS 1373, Univ. du Havre, Pl. Robert Schuman, 76610 Le Havre, France
The scattering of ell... | {"url":"http://www.auditory.org/asamtgs/asa96ind/4aSA/4aSA6.html","timestamp":"2014-04-18T19:16:21Z","content_type":null,"content_length":"2210","record_id":"<urn:uuid:1320110f-261e-4301-a1f0-4c155ec7cdaa>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00401-ip-10-147-4-33.ec2.internal... |
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Michael can wash and detail his car in 3 hours, and Jeanne can... | {"url":"http://openstudy.com/updates/502f10aee4b0ac288316531f","timestamp":"2014-04-18T08:13:32Z","content_type":null,"content_length":"103719","record_id":"<urn:uuid:bb4cd153-4b5b-460e-bfe0-58c5a64d4bf2>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00013-ip-10-147-4-33.ec2.internal... |
Mathematical Constants
Return a scalar, matrix, or N-dimensional array whose elements are all equal to the pure imaginary unit, defined as sqrt (-1).
I, and its equivalents i, j, and J, are functions so any of the names may be reused for other purposes (such as i for a counter variable).
When called with no... | {"url":"http://www.gnu.org/software/octave/doc/interpreter/Mathematical-Constants.html","timestamp":"2014-04-18T06:56:54Z","content_type":null,"content_length":"17184","record_id":"<urn:uuid:c8e5a7d7-dbce-4c3c-bb04-df2e756881bb>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-20140416005212-00329-ip-... |
Algebraic and Geometric Topology 5 (2005), paper no. 27, pages 653-690.
Differentials in the homological homotopy fixed point spectral sequence
Robert R. Bruner, John Rognes
Abstract. We analyze in homological terms the homotopy fixed point spectrum of a T-equivariant commutative S-algebra R. There is a homological hom... | {"url":"http://www.emis.de/journals/UW/agt/AGTVol5/agt-5-27.abs.html","timestamp":"2014-04-17T15:35:14Z","content_type":null,"content_length":"4006","record_id":"<urn:uuid:7c99fb83-fd0d-4611-8a36-95894f934d07>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00173-ip-10-147-4-33.ec2.int... |
Posts tagged with equivalence class
One of my projects in life is to (i) become “fluent in mathematics" in the sense that my intuition should incorporate the objects and relationships of 20th-century mathematical discoveries, and (ii)
share that feeling with people who are interested in doing the same in a shorter time... | {"url":"http://isomorphismes.tumblr.com/tagged/equivalence+class","timestamp":"2014-04-18T00:28:40Z","content_type":null,"content_length":"213578","record_id":"<urn:uuid:42f42aad-1e2a-4267-8b0a-a28bb16dab64>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00501-ip-10-147-4-33.ec2.inter... |
pengtoh's blog
This post was from before the big reset. I keep coming back to this post to recompute the magic number for various lenses. I hope somebody finds this useful.
The magic number for Canon 5D mk II with 40mm 2.8 STM is 53 which is twice that of X100 with 23mm.
Once upon a time, I stumbled upon this concept c... | {"url":"http://pengtoh.blogspot.com/","timestamp":"2014-04-16T07:26:06Z","content_type":null,"content_length":"60522","record_id":"<urn:uuid:54991841-e9b0-4051-bc57-be4ef25db47e>","cc-path":"CC-MAIN-2014-15/segments/1398223206147.1/warc/CC-MAIN-20140423032006-00648-ip-10-147-4-33.ec2.internal.warc.gz"} |
Homework Help
Posted by Nickie on Saturday, January 26, 2013 at 2:35pm.
A population has a mean of 30 and a standard
deviation of 5.
a. If 5 points were added to every score in the
population, what would be the new values for the
mean and standard deviation?
b. If every score in the population were multiplied by
3 what... | {"url":"http://www.jiskha.com/display.cgi?id=1359228928","timestamp":"2014-04-17T20:54:24Z","content_type":null,"content_length":"10033","record_id":"<urn:uuid:eb73367b-fbca-4823-9f62-4a64d437e521>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-00029-ip-10-147-4-33.ec2.internal.warc.g... |
what is factoring
What is factoring?
What is factoring? It is the process by which one tries to make a mathematical expression look like a multiplication problem by looking for factors.
There are three concepts you will need to understand very well before you attempt to factor an expression
Start by studing the topics ... | {"url":"http://www.basic-mathematics.com/what-is-factoring.html","timestamp":"2014-04-20T20:56:52Z","content_type":null,"content_length":"39037","record_id":"<urn:uuid:a985c9c4-1879-41b0-b075-107384a011d2>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00045-ip-10-147-4-33.ec2.interna... |
East Somerville, MA Math Tutor
Find an East Somerville, MA Math Tutor
...From these perspectives I can help you grasp case studies and paper topics at a more fundamental level. I've been training public speakers for in-person, on radio, and on television occasions
for decades. I especially value helping speakers ma... | {"url":"http://www.purplemath.com/East_Somerville_MA_Math_tutors.php","timestamp":"2014-04-16T19:00:35Z","content_type":null,"content_length":"24265","record_id":"<urn:uuid:0527704a-de5c-48a9-9180-f29233c106f1>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00564-ip-10-147-4-33.ec2.int... |
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whats pie
• 5 months ago
• 5 months ago
Your question is r... | {"url":"http://openstudy.com/updates/526dede6e4b0c12158626a13","timestamp":"2014-04-18T23:43:17Z","content_type":null,"content_length":"34646","record_id":"<urn:uuid:88e1075d-fa6a-4c60-ad9e-c897c5ae1c08>","cc-path":"CC-MAIN-2014-15/segments/1397609535535.6/warc/CC-MAIN-20140416005215-00124-ip-10-147-4-33.ec2.internal.w... |
A. Subjects
B. Stimuli
C. Procedure
D. Comparison with spatial tuning curve bandwidths
E. Results and discussion
F. Experiment 1b: Effects of spectral edges on ripple discrimination
A. Rationale
B. Methods
C. Results and discussion
A. Rationale
B. Methods
C. Results
D. Discussion
A. Rationale
B. Methods
C. Results
1. B... | {"url":"http://scitation.aip.org/content/asa/journal/jasa/130/1/10.1121/1.3589255","timestamp":"2014-04-16T14:25:49Z","content_type":null,"content_length":"87471","record_id":"<urn:uuid:5d4671a2-58d7-47f6-a49b-963f91497d52>","cc-path":"CC-MAIN-2014-15/segments/1397609523429.20/warc/CC-MAIN-20140416005203-00260-ip-10-14... |
The Logic behind the Magic of DAX Cross Table Filtering
Automatic cross filtering between columns of the same table or related tables is a very powerful feature of DAX. It allows a measure to evaluate to different values for different cells in a pivot
table even though the DAX expression for the measure does not change... | {"url":"http://mdxdax.blogspot.com/2011/03/logic-behind-magic-of-dax-cross-table.html","timestamp":"2014-04-17T18:23:35Z","content_type":null,"content_length":"131021","record_id":"<urn:uuid:4cf85ce6-be17-4ffc-be39-79339df85703>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00004-ip-... |
select another subject area TitlesOfConstructivistMathCurricula 19 Jul 2005 - 01:46 CatherineJohnson
Jo Anne Cobasko has taken the time to construct a complete list of NCTM standards based math programs.
update: Department of Corrections
This list is David Klein's handiwork, not Jo Anne's. Thank you, David! (For everyt... | {"url":"http://www.kitchentablemath.net/twiki/bin/view/Kitchen/ImpCurriculum","timestamp":"2014-04-20T20:58:24Z","content_type":null,"content_length":"45535","record_id":"<urn:uuid:bf051a8e-7fa2-43bf-b7fa-7685c94ed49b>","cc-path":"CC-MAIN-2014-15/segments/1397609539230.18/warc/CC-MAIN-20140416005219-00323-ip-10-147-4-3... |
20th ANNIVERSARY YEAR
Centre de recherches mathematiques
Fields Institute
Pacific Institute for the Mathematical Sciences
September 6, 2012
at 3:30 p.m.
2012 CRM-Fields-PIMS Prize Lecture
Stevo Todorcevic, University of Toronto
... | {"url":"http://www.fields.utoronto.ca/programs/scientific/12-13/crm-fields-pims/index.html","timestamp":"2014-04-19T12:28:42Z","content_type":null,"content_length":"15381","record_id":"<urn:uuid:680d97d4-3afc-4cc1-add5-4df851dbd4ee>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00237... |
Math past, present and future
Math has never been one of my strongest subjects in school, period. For some people in my classes the numbers just seemed to always jump off the page and they could always find the solution quickly.
Me, well, that’s a different story. It’s always difficult for me to grasp the concept of wh... | {"url":"https://mth151.wordpress.com/2009/02/05/math-past-present-and-future/","timestamp":"2014-04-16T16:39:14Z","content_type":null,"content_length":"54312","record_id":"<urn:uuid:3cd4ed4f-edcc-48b4-af3f-9560e0e0d6f7>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00214-ip-10-147-4-... |
Math Help
May 15th 2005, 10:02 AM #1
Apr 2005
Perhaps matrices seem difficult to you at first. Solving for determinants of larger systems are a little time consuming. How long would it take you to compute a 4 by 4 determinant? How many two
by two determinants would you need to evaluate the determinant
... | {"url":"http://mathhelpforum.com/math-topics/243-matrices.html","timestamp":"2014-04-17T14:07:04Z","content_type":null,"content_length":"30455","record_id":"<urn:uuid:78dc79f5-ba2e-40cc-a757-db57a016c473>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00592-ip-10-147-4-33.ec2.internal... |
Patent US8126260 - System and method for locating a three-dimensional object using machine vision
This invention relates to machine vision systems, and more particularly to machine vision systems that locate viewed objects having three-dimensional characteristics.
The use of advanced machine vision systems and their un... | {"url":"http://www.google.ca/patents/US8126260?ie=ISO-8859-1","timestamp":"2014-04-16T07:38:50Z","content_type":null,"content_length":"193825","record_id":"<urn:uuid:8b79de34-ac5d-4959-899b-f050f2feef7e>","cc-path":"CC-MAIN-2014-15/segments/1397609521558.37/warc/CC-MAIN-20140416005201-00443-ip-10-147-4-33.ec2.internal.... |
Does this method have a name? Function Approximation by Polynomial Sum
I knew about it thanks. I think I thought of this when I heard about Taylor series and I was guessing what it was.
It looks bad with functions like sin(πx) and x^n; it looks too symmetric; it's limit is almost always + or - infinity; it completely i... | {"url":"http://www.physicsforums.com/showthread.php?p=3902325","timestamp":"2014-04-19T12:32:15Z","content_type":null,"content_length":"31150","record_id":"<urn:uuid:4bafb4df-fbcc-419f-a505-5e1be0ef79ff>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00030-ip-10-147-4-33.ec2.internal.... |
Method and apparatus for performing channel equalization in communication systems - Patent # 7535954 - PatentGenius
Method and apparatus for performing channel equalization in communication systems
7535954 Method and apparatus for performing channel ... | {"url":"http://www.patentgenius.com/patent/7535954.html","timestamp":"2014-04-19T02:40:00Z","content_type":null,"content_length":"54575","record_id":"<urn:uuid:7e9e2b54-0be7-40ef-97c1-0c6dffc4f3f0>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-00355-ip-10-147-4-33.ec2.internal.warc.gz... |
PopEcol Lect 20
Lecture notes for ZOO 4400/5400 Population Ecology
Lecture 20 (Wed. 6-Mar-13) Analysis of interspecific competition by means of paired continuous logistic growth equations.
The Lotka-Volterra competition equations.
Return to Main Index page Go back to lecture 19 of Mon. 4-Mar Go forward to lecture 21 of... | {"url":"http://www.uwyo.edu/dbmcd/popecol/marlects/lect20.html","timestamp":"2014-04-18T20:50:56Z","content_type":null,"content_length":"26653","record_id":"<urn:uuid:84373764-a4d4-47a2-bcad-294d187dbb9f>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00342-ip-10-147-4-33.ec2.internal.... |
The Fisher Exact Test
Matthew Healy is involved in "proprietary" biomedical research (probably biological weapons, if you ask me, but for now it appears he's on our side, so we're cool). He stumbled across the main
hypergeometric distribution probability calculator here at nerdbucket.com, and wanted to share some tips ... | {"url":"http://www.nerdbucket.com/statistics/hypergeometric/hypergeometric_biomedical_fisher_exact_test.php","timestamp":"2014-04-21T09:42:05Z","content_type":null,"content_length":"12784","record_id":"<urn:uuid:404add41-601a-43ae-9cad-2408fd06166e>","cc-path":"CC-MAIN-2014-15/segments/1397609539705.42/warc/CC-MAIN-201... |
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Digit sum of extremely large numbers
I figured it out, can't figure out how to delete it, sorry to make a post about nothing.
Roughly speaking n(n+1) will have twice as many digits as n and the resulting exponential growth of the digit length of n! is going to be a problem sooner or later. Perhaps some number theory is... | {"url":"http://www.java-forums.org/new-java/37928-digit-sum-extremely-large-numbers-print.html","timestamp":"2014-04-21T15:04:33Z","content_type":null,"content_length":"4686","record_id":"<urn:uuid:606a5f50-ff24-487d-b7c1-36aa9f516549>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-002... |
Numerical Methods
Some Remarks on Experiments
Comparison between Theory and Experiment
Designing an Airfoil
The design of an airfoil usually starts with the definition of the desired or required characteristics. These can be a certain range of lift coefficients, Reynolds- or Mach numbers, where the airfoil
shou... | {"url":"http://www.mh-aerotools.de/airfoils/methods.htm","timestamp":"2014-04-17T00:48:29Z","content_type":null,"content_length":"20538","record_id":"<urn:uuid:c1f4d095-a8e8-47e0-9cfd-703955b6e4fe>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00155-ip-10-147-4-33.ec2.internal.warc.gz... |
P> A Cyclotron Used To Accelerate Alpha [articles ... | Chegg.com
p> A cyclotron used to accelerate alpha [articles (m=6.55 x 10^-27kg, q=3.2x10^19C) has a radius pf .50, and a magnetic field of 1.8T<br />(a)what is the period of revolution of the alpha
particles?<br />(b)what is their kinetic energy</p>
Electrica... | {"url":"http://www.chegg.com/homework-help/questions-and-answers/p-cyclotron-used-accelerate-alpha-articles-m-655-x-10-27kg-q-32x10-19c-radius-pf-50-magnet-q4022439","timestamp":"2014-04-18T14:06:09Z","content_type":null,"content_length":"20801","record_id":"<urn:uuid:2e0f7da8-9c27-46fc-bcd5-65f905c22e35>","cc-path":"C... |
Testing Einstein's famous equation E=mc<sup>2</sup> in outer space
University of Arizona physicist Andrei Lebed has stirred the physics community with an intriguing idea yet to be tested experimentally: The world's most iconic equation, Albert Einstein's E=mc^2, may
be correct or not depending on where you are in space... | {"url":"http://www.sciencedaily.com/releases/2013/01/130108162227.htm?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+sciencedaily%2Fspace_time+%28Space+%26+Time+News+--+ScienceDaily%29","timestamp":"2014-04-21T09:47:18Z","content_type":null,"content_length":"91656","record_id":"<urn:uuid:44fa1156-f685-492d-... |
Having trouble simplifying this integral
October 1st 2010, 11:42 AM
Having trouble simplifying this integral
So I have to evluate the integral and simplify it. I'm stuck near the end after applying F(b) - F(a) and can't simplify it further.
October 1st 2010, 12:59 PM
$\displaystyle \int (y^2-\sin y)~dy =\frac{y... | {"url":"http://mathhelpforum.com/calculus/158114-having-trouble-simplifying-integral-print.html","timestamp":"2014-04-20T09:05:51Z","content_type":null,"content_length":"8843","record_id":"<urn:uuid:1bdb8440-98c5-4ea1-a113-56fb97ca9c8f>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-0... |
IntroductionParallel Robot DesignTwo-DOF DesignsThree-DOF DesignsFour-DOF DesignsFive-DOF DesignsSix-DOF DesignsSensor Application of Parallel MechanismsKinematic ModelClassical methods or computational intelligence?CalibrationPrinciplesCalibration ProcedureJoint CalibrationKinematic CalibrationWhat type of errors can ... | {"url":"http://www.mdpi.com/1424-8220/10/11/10256/xml","timestamp":"2014-04-19T08:13:35Z","content_type":null,"content_length":"231979","record_id":"<urn:uuid:1450fe7b-61e5-4b48-ad08-713d5159e19e>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00586-ip-10-147-4-33.ec2.internal.warc.gz"... |
Symmetry and Conservation of Charge
...isn't that a contradiction in terms? To "gauge" a symmetry means to make it local...
No, global gauge symmetries are independent of space; local gauge symmetries depend on spatial coordinates. I might this wrong (it's been a while), but I seem to recall that gauge symmetries in
ge... | {"url":"http://www.physicsforums.com/showthread.php?t=209416","timestamp":"2014-04-21T07:13:52Z","content_type":null,"content_length":"33896","record_id":"<urn:uuid:de316c1c-06aa-4286-b8db-f36949673e9e>","cc-path":"CC-MAIN-2014-15/segments/1397609539665.16/warc/CC-MAIN-20140416005219-00026-ip-10-147-4-33.ec2.internal.w... |
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3 • 5 = 5 • 3 is an example of which algebraic property? Distr... | {"url":"http://openstudy.com/updates/5088669de4b004fc96eb6a0b","timestamp":"2014-04-18T20:48:22Z","content_type":null,"content_length":"37238","record_id":"<urn:uuid:f569a13b-9ff2-4076-bc59-140d2b1152f6>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416005215-00590-ip-10-147-4-33.ec2.internal.w... |
Summary: arXiv:1006.3147v1[math.SP]16Jun2010
Karlin Theory On Growth and Mixing
Extended to Linear Differential Equations
Lee Altenberg
June 17, 2010
Karlin's (1982) Theorem 5.2 shows that linear systems alternating between
growth and mixing phases have lower asymptotic growth with greater mixing.
Here this result is e... | {"url":"http://www.osti.gov/eprints/topicpages/documents/record/581/2271218.html","timestamp":"2014-04-23T21:34:52Z","content_type":null,"content_length":"8358","record_id":"<urn:uuid:64128035-555c-4c92-ac7b-a1e534490d95>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00426-ip-10-147-4... |
9.61% annualized return high for risk for Baytex Energy9.61% annualized return high for risk for Baytex Energy
9.61% annualized return high for risk for Baytex Energy
In analyzing a company’s cost of debt, current tax rate, cost of equity and WACC, we will get an understanding of the company’s financial risk, and futur... | {"url":"http://www.stockresearching.com/2013/01/18/9-61-annualized-return-high-for-risk-for-baytex-energy/","timestamp":"2014-04-18T18:28:42Z","content_type":null,"content_length":"92262","record_id":"<urn:uuid:43f40370-2e47-468b-8dc8-26cdbdd27e02>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140... |
How to Calculate Expected Values | The Classroom | Synonym
In statistics and probability, the formula for expected value is E(X) = summation of X * P(X), or the sum of all gains multiplied by their individual probabilities. The expected value is comprised on
two components: how much you can expect to gain, and how much... | {"url":"http://classroom.synonym.com/calculate-expected-values-2764.html","timestamp":"2014-04-17T12:30:26Z","content_type":null,"content_length":"32790","record_id":"<urn:uuid:16dcb112-040e-42d1-baa9-414964306595>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00044-ip-10-147-4-33.ec... |
Some math about resistances
I thought a bit about resistances... i dont like that you can only use 2 approaches:
1. dont take resist at all
2. take all you find
This is mainly because if you have 60% resistance and find another 10%, it is MUCH stronger than when you have 0% resistance before...
If the resistance curve ... | {"url":"http://www.qcfdesign.com/forum/viewtopic.php?f=3&t=2474&p=21627","timestamp":"2014-04-18T06:14:01Z","content_type":null,"content_length":"23444","record_id":"<urn:uuid:83a4f2df-3e14-40bd-a259-446f7f89a4bd>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-20140416005212-00630-ip-10-147-4-33.ec2... |
Leeward CC Math Lab Basic Services
Tutoring is available for students currently enrolled in a Leeward CC MATH or QM discipline course, at no charge, on a first-come-first-serve-basis. Please be aware that tutors are not able to help
students on any work that they will receive credit for. This includes take home exams o... | {"url":"http://www.leeward.hawaii.edu/mathlab-services","timestamp":"2014-04-17T15:38:00Z","content_type":null,"content_length":"16047","record_id":"<urn:uuid:396af694-4cc6-47cf-acc5-b8b6bda3308d>","cc-path":"CC-MAIN-2014-15/segments/1397609530136.5/warc/CC-MAIN-20140416005210-00164-ip-10-147-4-33.ec2.internal.warc.gz"... |
A National Prediction Model for PM2.5 Component Exposures and Measurement Error–Corrected Health Effect Inference
PDF Version 1.5 MB
• Background: Studies estimating health effects of long-term air pollution exposure often use a two-stage approach: building exposure models to assign individual-level exposures, which... | {"url":"http://ehp.niehs.nih.gov/1206010/","timestamp":"2014-04-21T09:54:57Z","content_type":null,"content_length":"103141","record_id":"<urn:uuid:a7c13bfb-fe7b-4732-a7ec-38fb9ad50b3d>","cc-path":"CC-MAIN-2014-15/segments/1397609539705.42/warc/CC-MAIN-20140416005219-00580-ip-10-147-4-33.ec2.internal.warc.gz"} |
You are here : Control System Design - Index | Book Contents | Chapter 13
13. Digital Control
Models for discrete time systems have been described in Chapter 1. There we saw that digital and continuous systems were actually quite ... | {"url":"http://csd.newcastle.edu.au/chapters/chapter13.html","timestamp":"2014-04-20T23:28:09Z","content_type":null,"content_length":"6351","record_id":"<urn:uuid:df737157-0d39-4278-bbf6-d8d7a442b229>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00305-ip-10-147-4-33.ec2.internal.warc... |
Periodic Function problem
August 26th 2007, 02:58 PM #1
Super Member
Mar 2006
Periodic Function problem
Let $f(x)=cosx+cos \pi x$
a) Show that $f(x)=2$ has a unique solution.
b) Show that f(x) is not periodic.
My proof so far:
Now, I realize that f(x) = 2 iff x=0 in this case, but will that be e... | {"url":"http://mathhelpforum.com/calculus/18079-periodic-function-problem.html","timestamp":"2014-04-16T10:35:11Z","content_type":null,"content_length":"68235","record_id":"<urn:uuid:fc3e1e5e-4250-48b7-bf6b-ad2f82ea4d4a>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203-00095-ip-10-147-4... |
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Hi, what´s the better measure when the capital is scarce: NPV ... | {"url":"http://openstudy.com/updates/4e76bce60b8b7d4f6d082daa","timestamp":"2014-04-20T13:49:02Z","content_type":null,"content_length":"30489","record_id":"<urn:uuid:aae7af68-0af6-4fbc-a95c-4e2a5b3426fa>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00448-ip-10-147-4-33.ec2.internal.... |
Following the analytical model of Marcel Duchamp's With Hidden Noise, we have counted down, by the numbers, beginning from the six external faces of the cubic volume occupied by the piece of
sculpture. The aspect of "fiveness" was counted in the measurement of each edge of that cube by the standard of the English inch.... | {"url":"http://www.csus.edu/indiv/v/vonmeierk/8-01ZE.html","timestamp":"2014-04-18T20:45:24Z","content_type":null,"content_length":"44807","record_id":"<urn:uuid:4805511f-c942-4fa1-8354-d2d2f5698c5e>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416005215-00094-ip-10-147-4-33.ec2.internal.warc.... |
Measuring Player Contributions in Hockey
Hockey is a popular sport due to the continuous nature of play and frequent changes of players on the ice that leads to a fast pace of gameplay. Adding to the excitement is the relatively high
frequency of scoring opportunities, but the relatively low frequency of scoring events... | {"url":"http://chance.amstat.org/2013/09/sports263/","timestamp":"2014-04-20T08:13:53Z","content_type":null,"content_length":"38748","record_id":"<urn:uuid:49128d18-d75e-4ebe-83f4-89840a881bec>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00006-ip-10-147-4-33.ec2.internal.warc.gz"} |
Climate Sensitivity Deconstructed
Guest Post by Willis Eschenbach
I haven’t commented much on my most recents posts, because of the usual reasons: a day job, and the unending lure of doing more research, my true passion. To be precise, recently I’ve been frying my
synapses trying to twist my head around the implication... | {"url":"http://wattsupwiththat.com/2013/06/03/climate-sensitivity-deconstructed/","timestamp":"2014-04-16T07:21:20Z","content_type":null,"content_length":"607839","record_id":"<urn:uuid:6fe5d7d4-0d22-4763-92d0-73a81c6ad810>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00198-ip-10-14... |
Asymptotics of the generalized exponential integral, and error bounds in the uniform asymptotic smoothing of its Stokes' discontinuities. To appear in: Royal Society of London Proceedings: Philosophical Transactions
- In Tricomi's Ideas and Contemporary Applied Mathematics, Atti dei Convegni Lincei, n. 147, Accademia N... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=2138655","timestamp":"2014-04-20T14:45:17Z","content_type":null,"content_length":"15372","record_id":"<urn:uuid:10f996b5-17cc-474c-a21e-ee981f584e41>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00099-ip-10-147-4-33.ec2.internal.war... |
Abstract-several questions
February 9th 2010, 01:33 AM #1
Dec 2009
Abstract-several questions
Well, I'm trying to solve some old exams in abstract algebra, and I need your help in the following:
Question 1:
Let $U(Z/15Z)$ be the multiplicative group of the invertible elemenets in $Z/15Z$ . Write $U(Z/15... | {"url":"http://mathhelpforum.com/advanced-algebra/127945-abstract-several-questions.html","timestamp":"2014-04-18T08:59:17Z","content_type":null,"content_length":"53621","record_id":"<urn:uuid:906d51b7-0f17-49f6-936e-450750328023>","cc-path":"CC-MAIN-2014-15/segments/1397609533121.28/warc/CC-MAIN-20140416005213-00116-i... |
A simple Binary Search Tree written in C#
In Computer Science, a binary tree is a hierarchical structure of nodes, each node referencing at most to two child nodes. Every binary tree has a root from which the first two child nodes originate.
If a node has no children, then such nodes are usually termed leaves, and mark... | {"url":"http://www.codeproject.com/Articles/18976/A-simple-Binary-Search-Tree-written-in-C?msg=3994083&PageFlow=FixedWidth","timestamp":"2014-04-17T12:54:22Z","content_type":null,"content_length":"136866","record_id":"<urn:uuid:3e315ca9-65ae-457f-b2da-64ba56e9f52f>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/... |
Calculus (Urgent Help)
Posted by Veronica on Friday, July 25, 2008 at 4:38pm.
Okay, I need major help! Can someone tell me if these statements are true or false ASAP please. Thank you.
1. If ƒ′(x) < 0 when x < c then ƒ(x) is decreasing when x < c.
2. The function ƒ(x) = x^3 – 3x + 2 is increasing on the interval -1 < x... | {"url":"http://www.jiskha.com/display.cgi?id=1217018285","timestamp":"2014-04-20T04:09:21Z","content_type":null,"content_length":"12315","record_id":"<urn:uuid:6b75d34c-c18b-43d4-bc41-1e4b0d2091a7>","cc-path":"CC-MAIN-2014-15/segments/1397609537864.21/warc/CC-MAIN-20140416005217-00663-ip-10-147-4-33.ec2.internal.warc.g... |
Quantum noise in optical fibers. I. Stochastic equations
We analyze the quantum dynamics of radiation propagating in a single-mode optical fiber with dispersion, nonlinearity, and Raman coupling to thermal phonons. We start from a fundamental Hamiltonian
that includes the principal known nonlinear effects and quantum-n... | {"url":"http://www.opticsinfobase.org/josab/abstract.cfm?uri=josab-18-2-139","timestamp":"2014-04-20T00:20:32Z","content_type":null,"content_length":"130515","record_id":"<urn:uuid:b7f99144-fa0c-4a0b-853b-9f142b933a30>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00634-ip-10-147-4-3... |
The Normal Distribution | University of the Sciences
The Normal Distribution
Repeated measurements in biology are rarely identical, due to random errors and natural variation. If enough measurements are repeated they can be plotted on a histogram, like the one on the right.
This usually shows a normal distribution, wit... | {"url":"http://www.usciences.edu/biology/bs130/normal%20distribution.html","timestamp":"2014-04-20T00:57:38Z","content_type":null,"content_length":"4868","record_id":"<urn:uuid:21204f1c-60b8-4e80-86ea-66ee0cf2642f>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00488-ip-10-147-4-33.ec2... |
Free Probability Theory: New Developments and Applications
Serban Belinschi
(Saskatchewan) and
... | {"url":"http://cms.math.ca/Events/summer12/abs/fpt","timestamp":"2014-04-18T21:02:08Z","content_type":null,"content_length":"19041","record_id":"<urn:uuid:8c3b8482-cc6f-4c41-a37b-9a458af00e14>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416005215-00651-ip-10-147-4-33.ec2.internal.warc.gz"} |
Physics Forums - linear circuit problems
linear circuit problems
In solving linear circuit problems using complex currents, charges etc. I have stumbled upon something I never really understand. You are basically solving 1st and 2nd order differential equations by
algebraic means, right? Well at what point do you appl... | {"url":"http://www.physicsforums.com/printthread.php?t=662983","timestamp":"2014-04-18T15:40:47Z","content_type":null,"content_length":"7704","record_id":"<urn:uuid:433e4a49-2969-4574-afaf-60fcf9a72c8c>","cc-path":"CC-MAIN-2014-15/segments/1397609533957.14/warc/CC-MAIN-20140416005213-00012-ip-10-147-4-33.ec2.internal.w... |
The Runic Bulwark Troll
Originally Posted by
Maybe you should learn the value of HP.
Edit: Here mathematical proof that bulwark is slot efficient.
Self Gold Value
400 health = 1056g
10 health regeneration= 360g
30 armor = 600g
60 magic resist = 1200g
Total Gold Value = 3216g
Aura Value per Ally Champion
10 health regen... | {"url":"http://forums.na.leagueoflegends.com/board/showthread.php?s=&p=33205152","timestamp":"2014-04-21T13:53:47Z","content_type":null,"content_length":"49883","record_id":"<urn:uuid:cce48359-9153-403d-ba86-93fef40f50ff>","cc-path":"CC-MAIN-2014-15/segments/1397609539776.45/warc/CC-MAIN-20140416005219-00271-ip-10-147-... |
Histograms are used to record the distribution of a piece of data over time.
They’re used when you have a type of data for which the following are true:
• There are distinct “events” for this type of data, such as “user performs a search and we return N results”.
• Each event has a numeric value (the “N results” in... | {"url":"http://metrics-clojure.readthedocs.org/en/latest/metrics/histograms.html","timestamp":"2014-04-19T12:24:06Z","content_type":null,"content_length":"17529","record_id":"<urn:uuid:d072a664-961f-4437-b30a-d60ddb21823e>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00644-ip-10-147... |
Lafayette, CO Science Tutor
Find a Lafayette, CO Science Tutor
...Science is my very favorite to teach and share my excitement for. Reading: I love teaching reading! Whether your student is starting out, or just having troubles getting the knack of it,
breaking it down into very small pieces is incredibly helpful a... | {"url":"http://www.purplemath.com/Lafayette_CO_Science_tutors.php","timestamp":"2014-04-19T12:14:33Z","content_type":null,"content_length":"24014","record_id":"<urn:uuid:0ea635dd-96f0-4c07-ba78-91bdacb2ffd7>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00543-ip-10-147-4-33.ec2.inter... |
Parseval's Theorem
July 4th 2010, 04:47 PM #1
Parseval's Theorem
I am trying to prove Parseval's theorem and I have got a problem in this step. So I have shown only a step in this proof. The Fourier coefficient is given by $a_n=\frac{1}{\pi}\int_{-\pi}^{\pi}f
(x)cosnx dx$
Now, in this step $\int_{-\pi}^{\pi... | {"url":"http://mathhelpforum.com/calculus/150098-parseval-s-theorem.html","timestamp":"2014-04-20T10:22:11Z","content_type":null,"content_length":"29388","record_id":"<urn:uuid:ee963f0a-0004-403a-8e36-51555665388d>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00604-ip-10-147-4-33.ec2... |