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Need Urgent Help!!!!!!!!!
July 1st 2008, 06:52 AM
Need Urgent Help!!!!!!!!!
Can anyone help me with the following problem asap:
There are 9 tennis balls in a box, of which only 5 have not previously been used. Four of the balls are randomly chosen from the box. Let 'z' be the number of new balls among the selec... | {"url":"http://mathhelpforum.com/advanced-statistics/42832-need-urgent-help-print.html","timestamp":"2014-04-19T05:18:12Z","content_type":null,"content_length":"4704","record_id":"<urn:uuid:aa96a436-8dae-41b0-8da2-a019445f0a81>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-20140416005215-00025-ip-1... |
Testing for a change in mean in a time series
up vote 2 down vote favorite
Suppose I have m observations from a time series before some specified date, and n additional observations after that date. The mean of the time series is expected to change on that date by an
unknown amount, without further changes to the time ... | {"url":"http://mathoverflow.net/questions/57407/testing-for-a-change-in-mean-in-a-time-series/93152","timestamp":"2014-04-20T01:15:17Z","content_type":null,"content_length":"56601","record_id":"<urn:uuid:1e9434a6-e823-4385-941c-c55659df2fdd>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-201404160052... |
Derivative question
October 24th 2007, 01:43 PM #1
Derivative question
I'm particularly confused on this question:
Find the derivative:
tan xy - (x^3)(y) = 3sec y + 7x^2
My biggest confusion is the tan xy portion. I really don't know where to start on that. The rest I can probably figure out - product r... | {"url":"http://mathhelpforum.com/calculus/21235-derivative-question.html","timestamp":"2014-04-20T03:47:54Z","content_type":null,"content_length":"29699","record_id":"<urn:uuid:04813262-84a3-40b1-97b7-0716e035da98>","cc-path":"CC-MAIN-2014-15/segments/1397609537864.21/warc/CC-MAIN-20140416005217-00413-ip-10-147-4-33.ec... |
Counting the Disabled: Using Survey Self-Reports to Estimate Medical Eligibility for Social Security’s Disability Programs
Counting the Disabled: Using Survey Self-Reports to Estimate Medical Eligibility for Social Security’s Disability Programs
by Debra Dwyer, Jianting Hu, Denton R. Vaughan, and Bernard Wixon
ORES W... | {"url":"https://www.socialsecurity.gov/policy/docs/workingpapers/wp90-text.html","timestamp":"2014-04-16T21:56:58Z","content_type":null,"content_length":"11566","record_id":"<urn:uuid:f449510f-26c0-450f-ba03-7f24e3f40fa7>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00544-ip-10-147-4... |
Welcome to April! This time, I have some Math Mammoth news... but also plenty of other stuff! Quadrilaterals, triangles, simplifying fractions before multiplying... and how to tell if your math
curriculum is working.
1. Math Mammoth news 2. Simplify before you multiply! 3. Free worksheets for classifying triangles and ... | {"url":"http://www.homeschoolmath.net/newsletter/volume71-april-2013.htm","timestamp":"2014-04-20T05:42:29Z","content_type":null,"content_length":"11336","record_id":"<urn:uuid:e57e2c7e-9adc-4ab9-96a0-b6435be3b295>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416005218-00210-ip-10-147-4-33.ec... |
[FOM] Re: A new characterization of recursivity
Henk@degas.ceu.hu Henk at degas.ceu.hu
Thu Jun 3 20:25:30 EDT 2004
On Wed, Jun 02, 2004 at 12:18:43PM -0400, Ali Enayat wrote:
> It is easy to see that if A is end extended by B, then Sigma_1 predicates
> are upward absolute (and conversely, Pi_1 predicates are downward a... | {"url":"http://www.cs.nyu.edu/pipermail/fom/2004-June/008249.html","timestamp":"2014-04-17T10:19:55Z","content_type":null,"content_length":"5763","record_id":"<urn:uuid:6ecad16d-5af9-4b59-a98d-39f015462617>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00462-ip-10-147-4-33.ec2.intern... |
Corrections to the McKitrick (2002) Global Average Temperature Series
Last week I wrote about Paul Georgia’s review of Essex and McKitrick’s Taken by Storm. Based on their book, Georgia made multiple incorrect statements about the physics of temperature. Of course, it
might have just been that Georgia misunderstood the... | {"url":"http://scienceblogs.com/deltoid/2004/05/20/mckitrick3/","timestamp":"2014-04-20T14:14:26Z","content_type":null,"content_length":"112924","record_id":"<urn:uuid:a811d709-5c76-459d-8915-f454a821a29c>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00499-ip-10-147-4-33.ec2.interna... |
Posts by
Total # Posts: 9,948
The domain of all polynomials is real, i.e. (-∞,∞).
The coefficients of sin(x) and -cos(x) are 1 and -1 respectively. We divide each term by the factor sqrt(1²+(-1)²)=sqrt(2) y=sinx-cosx => y=sqrt(2)[sin(x)*(1/sqrt(2)+cos(x)*(-1/sqrt(2)) Since cos(-π/
4)=1/sqrt(2), and sin(-π/4)=-1/sqrt(2... | {"url":"http://www.jiskha.com/members/profile/posts.cgi?name=MathMate&page=16","timestamp":"2014-04-23T11:11:42Z","content_type":null,"content_length":"31930","record_id":"<urn:uuid:78e91562-4776-4a1a-8c22-e1bac00a8b64>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00247-ip-10-147-4-3... |
Breakeven Analysis
Breakeven analysis answers the question, "what do I need in sales in order to break even?" By breaking even, we mean not losing any money, but also not making any money. The breakeven sales amount is
commonly referred to as your monthly "nut". If sales are below this amount, you feel bad, if they are... | {"url":"http://www.survivalware.com/articles/breakeven.php","timestamp":"2014-04-21T02:48:58Z","content_type":null,"content_length":"48056","record_id":"<urn:uuid:921518c2-9939-4db6-a265-836cd79556e2>","cc-path":"CC-MAIN-2014-15/segments/1398223203235.2/warc/CC-MAIN-20140423032003-00130-ip-10-147-4-33.ec2.internal.warc... |
Implementation of Determinism and Buffer Boundedness Checking via Linear Programming
This is an implementation of the algorithm described in by Terauchi and Aiken, as well as a variant for buffer boundedness described in a forthcoming paper by Terauchi and Megacz.
To obtain the code, use darcs and type
darcs get http:... | {"url":"http://research.cs.berkeley.edu/project/cccd-impl/","timestamp":"2014-04-17T12:49:40Z","content_type":null,"content_length":"5873","record_id":"<urn:uuid:fd2a6278-3000-4b97-abb1-bc4c62a1b483>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00061-ip-10-147-4-33.ec2.internal.warc... |
Dynamic Analysis of Cracked Cantilever, Electrostatic Microactuators Using Radial Basis Functions
Mathematical Problems in Engineering
Volume 2012 (2012), Article ID 865461, 11 pages
Research Article
Dynamic Analysis of Cracked Cantilever, Electrostatic Microactuators Using Radial Basis Functions
Department of Electric... | {"url":"http://www.hindawi.com/journals/mpe/2012/865461/","timestamp":"2014-04-20T09:04:10Z","content_type":null,"content_length":"274606","record_id":"<urn:uuid:8f078925-9d3d-44d3-8bbe-edad865075cb>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00167-ip-10-147-4-33.ec2.internal.warc... |
The Open Door Web Site : IB Math Studies: Geometry and Trigonometry Index
Study Guide Homepage
IB Math Studies Homepage
Using the Graphic Display Calculator
Presumed Knowledge
Number and Algebra
> Geometry and Trigonometry
Logic Sets and Probability
Listings, Recognitions and Awards
EABJM Public Web Site
© The Open Doo... | {"url":"http://www.saburchill.com/math/004.html","timestamp":"2014-04-17T05:15:10Z","content_type":null,"content_length":"11291","record_id":"<urn:uuid:bb657a2c-19d9-4b30-8baa-705e2c29920f>","cc-path":"CC-MAIN-2014-15/segments/1398223205137.4/warc/CC-MAIN-20140423032005-00219-ip-10-147-4-33.ec2.internal.warc.gz"} |
Grid algorithm not working properly
September 21st, 2013, 10:57 AM
Grid algorithm not working properly
I'm trying to translate from pseudocode from a textbook into java, but it's not working, so I'm clearly doing something wrong. Before I show you my code, I think it's best I give you the text, so
you know exac... | {"url":"http://www.javaprogrammingforums.com/%20whats-wrong-my-code/31763-grid-algorithm-not-working-properly-printingthethread.html","timestamp":"2014-04-20T09:06:07Z","content_type":null,"content_length":"15592","record_id":"<urn:uuid:0add4c0e-4b4e-4d25-9798-f7b145d27853>","cc-path":"CC-MAIN-2014-15/segments/13982232... |
Rollingbay Math Tutor
Find a Rollingbay Math Tutor
Professional tutor focusing on Math/Statistics, Chemistry, Physics and Computers. Personally scored 800 on both SAT Math & SAT Math II & 787 in Chemistry prior to attending CalTech. Have extensive
IT industry experience and have been actively tutoring for 2 years.
... | {"url":"http://www.purplemath.com/rollingbay_math_tutors.php","timestamp":"2014-04-17T22:02:12Z","content_type":null,"content_length":"23588","record_id":"<urn:uuid:c7141742-9d2a-4744-9375-3f3e5ef07cca>","cc-path":"CC-MAIN-2014-15/segments/1397609532128.44/warc/CC-MAIN-20140416005212-00516-ip-10-147-4-33.ec2.internal.w... |
Lakeside, CA Prealgebra Tutor
Find a Lakeside, CA Prealgebra Tutor
...My job is to help students comprehend the material that is presented to them. I am aware of the different types of learning and I am very patient. My students really enjoy working with me
because I work with them and I constantly ask questions to... | {"url":"http://www.purplemath.com/Lakeside_CA_prealgebra_tutors.php","timestamp":"2014-04-19T17:16:23Z","content_type":null,"content_length":"24004","record_id":"<urn:uuid:f3a6f153-14d9-4801-be96-8f572594ae96>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00513-ip-10-147-4-33.ec2.int... |
Oriented equational logic programming is complete
- In Proceedings of ICALP 2001 , 2001
"... A crucial way for reducing the search space in automated deduction are the so-called selection strategies: in each clause, the subset of selected literals are the only ones involved in
inferences. For first-order Horn clauses w... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=908072","timestamp":"2014-04-17T01:24:12Z","content_type":null,"content_length":"24102","record_id":"<urn:uuid:7591e834-2127-4101-8e97-8f56f2a9dc28>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00273-ip-10-147-4-33.ec2.internal.warc... |
Possible Answer
Explore This Topic: Do all quadrilaterals have 360 degrees? Yes. How do the angles inside a quadrilateral add up to 360? If you cut any quadrilateral along one of its diagonals, the figures formed
Explore This Topic: Do all quadrilaterals have 360 degrees? Yes. Why does all quadrilaterals add up to 360 ... | {"url":"http://www.askives.com/why-does-a-quadrilateral-add-up-to-360-degrees.html","timestamp":"2014-04-19T04:44:48Z","content_type":null,"content_length":"36122","record_id":"<urn:uuid:55ec66d8-1da4-4d23-8ce0-02ed4314f284>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00381-ip-10-1... |
LSD Randomized Lower Bounds
Apparently a few people took issue with my (Data) Structures paper because it claimed a randomized lower bound for LSD without a proof, and this propagated to the FOCS PC. I recently received an
email from the PC asking for a sketch of the proof, pronto.
As I explained before to anon comment... | {"url":"http://infoweekly.blogspot.com/2008/06/lsd-randomized-lower-bounds.html?showComment=1213912020000","timestamp":"2014-04-21T15:48:16Z","content_type":null,"content_length":"75798","record_id":"<urn:uuid:0356bd3a-8990-4bf0-8fd4-f78759587dfa>","cc-path":"CC-MAIN-2014-15/segments/1397609540626.47/warc/CC-MAIN-20140... |
Prides Crossing Math Tutor
Find a Prides Crossing Math Tutor
...Tutoring also provides me with a vehicle for keeping my mind active and challenged over the summer. Patience and relentless optimism are my two greatest assets in teaching and tutoring.I have
been teaching Algebra 1 to 7th and 8th grade students for th... | {"url":"http://www.purplemath.com/prides_crossing_math_tutors.php","timestamp":"2014-04-18T21:40:02Z","content_type":null,"content_length":"23923","record_id":"<urn:uuid:27d3b1a2-4685-458a-b6e4-69d4359387ca>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416005215-00445-ip-10-147-4-33.ec2.intern... |
Re: Extending my question. Was: The relational model and relational algebra - why did SQL become the industry standard?
From: Mikito Harakiri <mikharakiri_at_ywho.com> Date: Mon, 17 Feb 2003 15:42:26 -0800 Message-ID: <0xe4a.16$7H6.165@news.oracle.com>
"Steve Kass" <skass_at_drew.edu> wrote in message news:b2rqnp$1tj$1... | {"url":"http://www.orafaq.com/usenet/comp.databases.theory/2003/02/17/0236.htm","timestamp":"2014-04-20T06:19:56Z","content_type":null,"content_length":"9340","record_id":"<urn:uuid:831ac240-ccde-4596-bf14-f907f407b771>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416005218-00208-ip-10-147-4-... |
Handbook of mathematics
Calculator Usage, Special Keys
The Decimal Numbering System
Adding Whole Numbers
Subtracting Whole Numbers
Multiplying Whole Numbers
Dividing Whole Numbers
Hierarchy of Mathematical Operations
Average Value
Proper and Improper Fractions
Equivalent Fractions
Addition and Subtraction of Fractions
... | {"url":"http://artikel-software.com/blog/2006/10/08/handbook-of-mathematics/","timestamp":"2014-04-19T09:24:55Z","content_type":null,"content_length":"90554","record_id":"<urn:uuid:29abbb44-96b8-4f59-905f-071019cea981>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MAIN-20140416005217-00642-ip-10-147-4-3... |
Modeling Of Photovoltaic Array Biology Essay
According to the theory of semiconductors, an ideal PV cell can be considered as a current source which is in parallel with one or two diodes depending on the manufacturing technology and
semi-conducting materials [11], [13]. However, in case of representing practical behavi... | {"url":"http://www.ukessays.com/essays/biology/modeling-of-photovoltaic-array-biology-essay.php","timestamp":"2014-04-21T14:41:32Z","content_type":null,"content_length":"35258","record_id":"<urn:uuid:aedde59e-524d-408f-8dd7-f64684bd285d>","cc-path":"CC-MAIN-2014-15/segments/1397609540626.47/warc/CC-MAIN-20140416005220-... |
Incomplete Beta Function Ratios
Incomplete Beta Function Ratios
TOMS708 is a FORTRAN77 library which computes the Incomplete Beta Function ratio
, by Armido Didonato, Alfred Morris, Jr.
11 January 2006: Thanks to Ian Smith for po... | {"url":"http://people.sc.fsu.edu/~jburkardt/f77_src/toms708/toms708.html","timestamp":"2014-04-19T10:07:08Z","content_type":null,"content_length":"9151","record_id":"<urn:uuid:59a98168-987b-43a4-b068-70a7f1ec205a>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MAIN-20140416005217-00375-ip-10-147-4-33.ec2... |
Truth of the Poisson summation formula
up vote 11 down vote favorite
The Poisson summation says, roughly, that summing a smooth $L^1$-function of a real variable at integral points is the same as summing its Fourier transform at integral points(after suitable
normalization). Here is the wikipedia link.
For many years I... | {"url":"http://mathoverflow.net/questions/14568/truth-of-the-poisson-summation-formula","timestamp":"2014-04-18T13:27:40Z","content_type":null,"content_length":"67276","record_id":"<urn:uuid:b2d2fee2-5516-48b7-a8bf-c29f021c409a>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00250-ip-... |
Balls in a bag
March 3rd 2011, 11:09 AM
Balls in a bag
There are 10 red balls, 10 green balls and 6 white balls.
Two balls picked at random - what is the probability that they are of different colors?
so probability of the first ball is 1/26 (if i'm right?), i don't get how to find t he probablity of the se... | {"url":"http://mathhelpforum.com/statistics/173321-balls-bag-print.html","timestamp":"2014-04-21T07:11:53Z","content_type":null,"content_length":"11253","record_id":"<urn:uuid:00045d15-07fa-4af6-a6e6-37f56c723da5>","cc-path":"CC-MAIN-2014-15/segments/1397609539665.16/warc/CC-MAIN-20140416005219-00603-ip-10-147-4-33.ec2... |
A network with tunable clustering, degree correlation and degree distribution, and an epidemic thereon
Find out how to access preview-only content
March 2013
Volume 66
Issue 4-5
pp 979-1019
A network with tunable clustering, degree correlation and degree distribution, and an epidemic thereon
Purchase on Springer.com
$3... | {"url":"http://link.springer.com/article/10.1007%2Fs00285-012-0609-7","timestamp":"2014-04-17T15:53:51Z","content_type":null,"content_length":"61203","record_id":"<urn:uuid:14578011-0d17-4efe-86b4-ed4e3957a2be>","cc-path":"CC-MAIN-2014-15/segments/1397609540626.47/warc/CC-MAIN-20140416005220-00418-ip-10-147-4-33.ec2.in... |
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What is the equation of the line that passes through (12, 4) a... | {"url":"http://openstudy.com/updates/4f74d52fe4b0f07ddab14527","timestamp":"2014-04-20T00:43:52Z","content_type":null,"content_length":"40355","record_id":"<urn:uuid:eaec2098-43dc-45c4-a1fc-ea72918813ae>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00133-ip-10-147-4-33.ec2.internal.w... |
Can a butterfly start a hurricane?
Jul 25, 2007 To the editor: "The butterfly effect" is the proposition that the flapping of a butterfly's wings could affect weather half a world away. It was popularized to explain the generation of
tropical waves in the Atlantic: a butterfly flapping its wings in equatorial Africa ca... | {"url":"http://www.oceannavigator.com/July-August-2007/Can-a-butterfly-start-a-hurricane/","timestamp":"2014-04-19T17:04:27Z","content_type":null,"content_length":"18903","record_id":"<urn:uuid:82977881-c9e6-4ac8-a394-8343201bf888>","cc-path":"CC-MAIN-2014-15/segments/1397609537308.32/warc/CC-MAIN-20140416005217-00354-... |
Mathematical Paintings of Crockett Johnson
Mathematical Paintings of Crockett Johnson
Selected Works of David Crockett Johnson
Barnaby, New York, NY: Henry Holt and Company, 1943.
Barnaby and Mr. O’Malley, New York: Henry Holt and Company, 1944.
Harold and the Purple Crayon, New York: Harper 7 Row, 1955.
“A Geometrical... | {"url":"http://americanhistory.si.edu/collections/object-groups/mathematical-paintings-of-crockett-johnson?ogmt_page=mathpaintings-resources&edan_start=0&ogmt_view=grid&edan_fq=name%3A%22Archimedes%22","timestamp":"2014-04-19T13:30:57Z","content_type":null,"content_length":"58853","record_id":"<urn:uuid:66261e49-1d96-4... |
The Princeton Mathematics Community in the 1930s
Transcript Number 2 (PMC2)
ŠThe Trustees of Princeton University, 1985
(with ALBERT TUCKER)
This is an interview of Valentine Bargmann at Princeton University on 12 April 1984. The interviewers are William Aspray and Albert Tucker.
Aspray: Could you tell me something abo... | {"url":"http://www.princeton.edu/~mudd/finding_aids/mathoral/pmc02.htm","timestamp":"2014-04-21T01:27:22Z","content_type":null,"content_length":"29920","record_id":"<urn:uuid:1b0d577a-9834-41b6-a572-f92a6aeeb656>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-20140416005219-00526-ip-10-147-4-33.ec2.... |
ACS pointing patterns
pointing patterns
This is a two-dimensional 4-point dither pattern, with the following allowable parameter ranges:
Pattern_Number: 1
Pattern_Type: ACS-WFC-DITHER-BOX
Pattern_Purpose... | {"url":"http://www.stsci.edu/hst/acs/proposing/dither/ACS-WFC-DITHER-BOX.html","timestamp":"2014-04-20T16:47:45Z","content_type":null,"content_length":"22097","record_id":"<urn:uuid:974dde7b-7fc5-4acd-84dd-1bbe70c434e3>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00558-ip-10-147-4-... |
deep_alpha : (string * string) list -> term -> term
Modify bound variable according to renaming scheme.
When applied to a list of string-string pairs
deep_alpha ["x1'","x1"; ...; "xn'","xn"]
a conversion results that will attempt to traverse a term and systematically replace any bound variable called ... | {"url":"http://www.cl.cam.ac.uk/~jrh13/hol-light/HTML/deep_alpha.html","timestamp":"2014-04-18T16:08:17Z","content_type":null,"content_length":"1801","record_id":"<urn:uuid:67fbd0ba-8e00-46a0-87a1-7f9437f65691>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00637-ip-10-147-4-33.ec2.int... |
Summary: A resolvable subfilter-scale model specific to large-eddy simulation
of under-resolved turbulence
Yong Zhou, James G. Brasseur,a)
and Anurag Junejab)
Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park,
Pennsylvania 16802
Received 20 February 2001; accepted 6 Ju... | {"url":"http://www.osti.gov/eprints/topicpages/documents/record/217/5446605.html","timestamp":"2014-04-16T11:26:33Z","content_type":null,"content_length":"8700","record_id":"<urn:uuid:bfe34e24-e8ee-4ddc-8dae-e36cd93e5136>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203-00589-ip-10-147-... |
An Undecidability Result on Limits of Sparse Graphs
Given a set $\mathcal{B}$ of finite rooted graphs and a radius $r$ as an input, we prove that it is undecidable to determine whether there exists a sequence $(G_i)$ of finite bounded degree graphs
such that the rooted $r$-radius neighbourhood of a random node of $G_i$... | {"url":"http://www.combinatorics.org/ojs/index.php/eljc/article/view/v19i2p21/0","timestamp":"2014-04-20T19:24:55Z","content_type":null,"content_length":"14315","record_id":"<urn:uuid:6c4ff4e2-30a1-4206-9226-a646fcb04f14>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00441-ip-10-147-... |
Angle between 2 vector
December 28th 2009, 11:16 PM #1
Dec 2008
Angle between 2 vector
Question : If $2 \theta$ is the angle between the 2 unit vectors $\bar a$ and $\bar b$, then show that $|\bar a - \bar b| = 2 sin \theta$
I know $\bar a - \bar b = |\bar a ||\bar b| cos \theta$
Is dont know what to do... | {"url":"http://mathhelpforum.com/advanced-algebra/121860-angle-between-2-vector.html","timestamp":"2014-04-17T14:17:49Z","content_type":null,"content_length":"51072","record_id":"<urn:uuid:f61ba215-69b8-4ad1-b122-6e85d5602860>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00462-ip-10... |
java program to find the root of quadratic equation
Author Message
medaxonan Posted: Wednesday 27th of Dec 21:49
Hi there I have almost taken the decision to look fora algebra tutor , because I've been hav... | {"url":"http://www.mathscitutor.com/expressions-maths/matrices/java-program-to-find-the-root.html","timestamp":"2014-04-16T04:11:17Z","content_type":null,"content_length":"60838","record_id":"<urn:uuid:0e63e4e5-4e84-41f2-a81a-3b0cb7f1be55>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-2014041600520... |
Rockrimmon, CO ACT Tutor
Find a Rockrimmon, CO ACT Tutor
...I was a teacher and tutor for a leading Test Preparation company for three years. I studied all aspects of the ACT math section and successfully taught over 100 students in effective ACT math
strategies. I was a teacher and tutor with a leading test prepar... | {"url":"http://www.purplemath.com/rockrimmon_co_act_tutors.php","timestamp":"2014-04-19T07:31:52Z","content_type":null,"content_length":"23891","record_id":"<urn:uuid:47e6f006-0b7d-48d4-869b-eaa2a3042f08>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00027-ip-10-147-4-33.ec2.internal... |
Posts Tagged with 'Psychometrics'—Wolfram|Alpha Blog
Prior to releasing Wolfram|Alpha into the world this past May, we launched the Wolfram|Alpha Blog. Since our welcome message on April 28, we’ve made 133 additional posts covering Wolfram|Alpha news,
team member introductions, and “how-to’s” in a wide variety of areas... | {"url":"http://blog.wolframalpha.com/tag/psychometrics/","timestamp":"2014-04-17T15:26:42Z","content_type":null,"content_length":"46190","record_id":"<urn:uuid:41f1ad26-20fc-48ef-b893-93867f67a26d>","cc-path":"CC-MAIN-2014-15/segments/1397609530136.5/warc/CC-MAIN-20140416005210-00588-ip-10-147-4-33.ec2.internal.warc.gz... |
Determining efficiency of multiplication algorithm
This explanation is from my text book for analyzing time efficiency of (non-recursive) algorithms.
1) Decide on a parameter indicating the input size
2) Identify the algorithm's basic operation
3) Setup a sum expressing the number of times the basic operation is execut... | {"url":"http://www.physicsforums.com/showthread.php?p=4235719","timestamp":"2014-04-20T05:53:19Z","content_type":null,"content_length":"53381","record_id":"<urn:uuid:2a389942-4cf8-4d0a-a499-7101d11d1a63>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416005218-00263-ip-10-147-4-33.ec2.internal.... |
writing quadratic equation for a graph
Re: writing quadratic equation for a graph
writing quadratic equation for a graph
Write a quadratic function that fits each set of points: (-1,-11), (1,0) (2,9). I plotted these points on a graph but I cannot find a common equation that would fit all these points. Would appreciate... | {"url":"http://www.purplemath.com/learning/viewtopic.php?p=6964","timestamp":"2014-04-17T04:39:51Z","content_type":null,"content_length":"18908","record_id":"<urn:uuid:b42a3986-5f9a-44b2-940d-26cb82863ce2>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00122-ip-10-147-4-33.ec2.interna... |
Teaching Textbooks
You are here: Home → Curriculum reviews → Teaching Textbooks
Teaching Textbooks
Grades: 5-12 Teaching Textbooks
Teaching Textbooks have been specifically designed for homeschoolers. They contain far more explanations ... | {"url":"http://www.homeschoolmath.net/curriculum_reviews/teaching_textbooks.php","timestamp":"2014-04-18T02:59:29Z","content_type":null,"content_length":"70324","record_id":"<urn:uuid:6e55d0e6-acea-42fb-aac2-96a0278b7024>","cc-path":"CC-MAIN-2014-15/segments/1397609532480.36/warc/CC-MAIN-20140416005212-00056-ip-10-147-... |
Interesting complexity classes $PR \subsetneq c \subsetneq R$
up vote 3 down vote favorite
I'm working on a proof-checker that can verify termination proofs. The fundamental method it provides for constructing such proofs is to translate the program into primitive recursion. Basically, I
provide a combinator $\rho$ typ... | {"url":"http://mathoverflow.net/questions/35461/interesting-complexity-classes-pr-subsetneq-c-subsetneq-r","timestamp":"2014-04-16T16:26:46Z","content_type":null,"content_length":"62285","record_id":"<urn:uuid:5d56037a-2008-41e8-83d3-a0f63cb5eee6>","cc-path":"CC-MAIN-2014-15/segments/1397609524259.30/warc/CC-MAIN-20140... |
no. of comparisons in linear/binary search
06-05-2004 #1
no. of comparisons in linear/binary search
hi, what is the no. of comparison in a worst case unsorted one-dimensional array of size N with linear search?
is it 'N'?
and if worst case sorted one-dimensional array of size N with binary search,
is it... | {"url":"http://cboard.cprogramming.com/brief-history-cprogramming-com/53654-no-comparisons-linear-binary-search.html","timestamp":"2014-04-20T07:50:13Z","content_type":null,"content_length":"69264","record_id":"<urn:uuid:6c6221e8-b806-4343-a25d-87bf04b02bb9>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC... |
Summary: OPTIMAL CONTROL PROBLEMS GOVERNED BY
H. AMANN AND P. QUITTNER
Abstract. We study the existence of optimal controls for problems governed
by semilinear parabolic equations. The nonlinearities in the state equation
need not be monotone and the data need not be regular. In particular, the
control may be any bound... | {"url":"http://www.osti.gov/eprints/topicpages/documents/record/073/3919202.html","timestamp":"2014-04-21T00:28:59Z","content_type":null,"content_length":"8362","record_id":"<urn:uuid:5f46adbb-d11b-4b35-ae06-167809555a07>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00389-ip-10-147-4... |
Register or Login To Download This Patent As A PDF
United States Patent Application 20040153430
Kind Code A1
Sayad, Saed August 5, 2004
Method and apparatus for data analysis
A computer system, method and computer program product for enabling data analysi... | {"url":"http://patents.com/us-20040153430.html","timestamp":"2014-04-20T13:38:28Z","content_type":null,"content_length":"124301","record_id":"<urn:uuid:d515cd1c-a5a4-49bf-a664-6e4e816a524c>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00358-ip-10-147-4-33.ec2.internal.warc.gz"} |
Technical Battery Discussion
So I am an engineer and really want to understand the battery. It is my understanding that there are 6831 NCR18650 Panasonic batteries in the "Battery pack". 11 moduals in series each with 9 "bricks"
in series and each brick with 69 18650's in parallel. So 69 * 9 * 11 = 6,831. Are you with ... | {"url":"http://www.teslamotors.com/en_BE/forum/forums/technical-battery-discussion","timestamp":"2014-04-16T11:26:47Z","content_type":null,"content_length":"41868","record_id":"<urn:uuid:34b7b9ab-34cb-4402-8fe2-ed0156671460>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203-00450-ip-10-1... |
Physics Forums - View Single Post - Using isomorphisms to transform polynomials to vectors.
Yes, sure. This can indeed be done.
This can be shown to be an isomorphism. So the vector spaces [itex]P_3[/itex] and [itex]\mathbb{R}^4[/itex] are the same for all linear algebra purposes. So a basis with the polynomials can b... | {"url":"http://www.physicsforums.com/showpost.php?p=3641655&postcount=2","timestamp":"2014-04-16T16:11:56Z","content_type":null,"content_length":"7521","record_id":"<urn:uuid:36ec1352-87aa-41ab-acba-a6d2489d4205>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00482-ip-10-147-4-33.ec2.... |
Nokesville Math Tutor
Find a Nokesville Math Tutor
...I work with parents so life-long learning habits are established. Children naturally enjoy learning. My goal is to make sure the whole family feels good about the time we spend together.
32 Subjects: including algebra 1, algebra 2, biology, chemistry
...I'll... | {"url":"http://www.purplemath.com/nokesville_va_math_tutors.php","timestamp":"2014-04-17T13:35:55Z","content_type":null,"content_length":"23488","record_id":"<urn:uuid:3df741cf-72d7-444e-8c9a-2dc93f15b7ff>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00167-ip-10-147-4-33.ec2.interna... |
William Poundstone
William Poundstone is an American author, columnist, and skeptic. He has written a number of books including the Big Secrets series and a biography of Carl Sagan. He is a cousin of comedian Paula
• Simple rules can have complex consequences. This simple rule has such a wealth of implications that i... | {"url":"https://en.m.wikiquote.org/wiki/William_Poundstone","timestamp":"2014-04-18T18:14:43Z","content_type":null,"content_length":"28869","record_id":"<urn:uuid:63a31418-59f2-47a7-a3dc-e4759471d7e3>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00369-ip-10-147-4-33.ec2.internal.warc... |
Open MPI User's Mailing List Archives
Hi Derek
Typically in the domain decomposition codes we have here
(atmosphere, oceans, climate)
there is an overlap across the boundaries of subdomains.
Unless your computation is so "embarrassingly parallel" that
each process can operate from start to end totally independent from
... | {"url":"http://www.open-mpi.org/community/lists/users/2010/03/12306.php","timestamp":"2014-04-18T03:26:19Z","content_type":null,"content_length":"32696","record_id":"<urn:uuid:d2bd284f-2cfe-4cff-8789-de6683f302ed>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00099-ip-10-147-4-33.ec2.... |
rearranging formula online calculator
Author Message
mh_gml Posted: Friday 03rd of Aug 17:18
I am looking for someone who can help me with m... | {"url":"http://www.emathtutoring.com/algebra-1-tutoring/equivalent-fractions/rearranging-formula-online.html","timestamp":"2014-04-20T16:43:24Z","content_type":null,"content_length":"29149","record_id":"<urn:uuid:2244b954-6111-402f-a33a-8ff697568399>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-201... |
st: RE: Differencing when dependent variable only defined every 4th year
Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down at the end of May, and its replacement, statalist.org is already up and
[Date Prev][Date Next][Thread Prev][Thread Next][Date... | {"url":"http://www.stata.com/statalist/archive/2011-11/msg01184.html","timestamp":"2014-04-21T02:52:40Z","content_type":null,"content_length":"8336","record_id":"<urn:uuid:46d9125a-2f99-4778-8552-7a0f0474a58b>","cc-path":"CC-MAIN-2014-15/segments/1397609539705.42/warc/CC-MAIN-20140416005219-00134-ip-10-147-4-33.ec2.int... |
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A kitten pushes a ball of yarn rolling toward it at 1.00 cm/s ... | {"url":"http://openstudy.com/updates/51032151e4b0ad57a562cdf0","timestamp":"2014-04-18T00:48:36Z","content_type":null,"content_length":"42058","record_id":"<urn:uuid:d3f118b3-e782-4cc4-a85b-f6147ad7fe4f>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00474-ip-10-147-4-33.ec2.internal.... |
Results 1 - 10 of 11
- Bull. Amer. Math. Soc , 1992
"... Abstract. In this paper we discuss the basic problems of algorithmic algebraic number theory. The emphasis is on aspects that are of interest from a purely mathematical point of view, and
practical issues are largely disregarded. We describe what has been done an... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=1575832","timestamp":"2014-04-20T17:26:29Z","content_type":null,"content_length":"34109","record_id":"<urn:uuid:c1f3271a-229b-4721-b229-d3c5f391e2e5>","cc-path":"CC-MAIN-2014-15/segments/1397609538824.34/warc/CC-MAIN-20140416005218-00374-ip-10-147-4-33.ec2.internal.wa... |
Multiple Choice Exam & Jelly Beans in a Bag
February 4th 2010, 04:00 AM
Multiple Choice Exam & Jelly Beans in a Bag
Probability drives me crazy (Headbang)
I couldn't figure out how it solves(Worried)(Worried)
could you help me please (Itwasntme)
Multiple Choice Exam
Each question on a 5 questions mu... | {"url":"http://mathhelpforum.com/statistics/127126-multiple-choice-exam-jelly-beans-bag-print.html","timestamp":"2014-04-20T11:36:10Z","content_type":null,"content_length":"7218","record_id":"<urn:uuid:1638f2d8-cd03-4338-99cf-006d8bdd6dbb>","cc-path":"CC-MAIN-2014-15/segments/1397609538423.10/warc/CC-MAIN-2014041600521... |
Network Structure and the Spread of Disease
Contagious disease are spread (generally) when one person comes in contact with another. Thus, the number of links in a network (the number of connections one has) will go a long way to determining
how fast diseases are spread.
One question which needs to be answered is wheth... | {"url":"http://healthcare-economist.com/2008/07/29/network-structure-and-the-spread-of-disease/","timestamp":"2014-04-19T05:33:45Z","content_type":null,"content_length":"28931","record_id":"<urn:uuid:7fd9fa5b-bbec-40cc-821a-50c8aaa82a3a>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-... |
find the median
03-30-2008 #1
Registered User
Join Date
Mar 2008
find the median
Can anyone give me some kind of hint of what I am doing wrong here?
I am trying to find the median integer in the file. I have set it up the way my teacher asked us to, which was to make 2 passes through the file entitled "Sect... | {"url":"http://cboard.cprogramming.com/cplusplus-programming/101113-find-median.html","timestamp":"2014-04-17T18:47:23Z","content_type":null,"content_length":"75649","record_id":"<urn:uuid:f733ce3c-2fda-4807-ae76-0c44f83fbb1e>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-00215-ip-10... |
Correlation: Easy as 1-2-3?
November 1, 2012
By skycondition
I recently had a task to take a look at some assessment (audit) data. I was assuming, rather hoping for data with a normal distribution and thought it would be a quick case of Pearson correlation
between two columns: "Duration" and "Score". Just conjecture at... | {"url":"http://www.r-bloggers.com/correlation-easy-as-1-2-3/","timestamp":"2014-04-18T03:24:29Z","content_type":null,"content_length":"37869","record_id":"<urn:uuid:95654b10-f48b-4c83-863a-068797fff7ca>","cc-path":"CC-MAIN-2014-15/segments/1397609532480.36/warc/CC-MAIN-20140416005212-00222-ip-10-147-4-33.ec2.internal.w... |
What is the square root of 500?
You asked:
What is the square root of 500?
Say hello to Evi
Evi is our best selling mobile app that can answer questions about local knowledge, weather, books, music, films, people and places, recipe ideas, shopping and much more. Over the next few months we
will be adding all of Evi's p... | {"url":"http://www.evi.com/q/what_is_the_square_root_of_500","timestamp":"2014-04-25T03:17:54Z","content_type":null,"content_length":"48644","record_id":"<urn:uuid:7093b9e9-37b8-4cd4-b9b7-eecdc48c3111>","cc-path":"CC-MAIN-2014-15/segments/1398223207985.17/warc/CC-MAIN-20140423032007-00538-ip-10-147-4-33.ec2.internal.wa... |
Olney, MD Algebra 2 Tutor
Find an Olney, MD Algebra 2 Tutor
...In addition to teaching science, I worked on reading and math skills with the students. I have a bachelor's degree in Biology and a doctorate degree in cell and molecular biology. I'm a very
patient person and would happy to help to share my knowledge a... | {"url":"http://www.purplemath.com/olney_md_algebra_2_tutors.php","timestamp":"2014-04-19T07:16:41Z","content_type":null,"content_length":"24001","record_id":"<urn:uuid:8720ba8d-226a-4ed6-aa5c-046064b989f7>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00201-ip-10-147-4-33.ec2.interna... |
Posts from April 2012 on Math Jokes 4 Mathy Folks
Archive for April, 2012
This morning, my friend AJ called to ask for help in solving a problem from his ten-year-old daughter’s homework. When he explained his dilemma, the first thing I did, of course, was laugh. “Wow,” I
said. “You really aren’t as smart as a fifth-gr... | {"url":"http://mathjokes4mathyfolks.wordpress.com/2012/04/","timestamp":"2014-04-20T09:09:18Z","content_type":null,"content_length":"64848","record_id":"<urn:uuid:9882e764-477b-421a-bf84-2877d77b3212>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00473-ip-10-147-4-33.ec2.internal.warc... |
Introduction to the Theory of Computation by Michael Sipser
199 Introduction to the Theory of Computation by Michael Sipser £10.00 £100.00 /l/Introduction-to-the-Theory-of-Computation-by-Michael-Sipser
Introduction to the Theory of Computation
Introduction to the Theory of Computation
Introduction to La... | {"url":"http://www.shopwiki.co.uk/l/Introduction-to-the-Theory-of-Computation-by-Michael-Sipser","timestamp":"2014-04-16T07:45:39Z","content_type":null,"content_length":"198229","record_id":"<urn:uuid:e276db10-78af-4cd2-8057-5fb92e7e98f6>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001... |
Trick for computing log(1+x)
Charles Karney showed me a clever trick for computing log(1+x). It only takes a couple lines of code, but those lines are not obvious. If you understand this trick, you’ll understand a good bit of
how floating point arithmetic works.
First of all, what’s the big deal? Why not just add 1 to ... | {"url":"http://www.johndcook.com/blog/2012/07/25/trick-for-computing-log1x/","timestamp":"2014-04-20T10:47:15Z","content_type":null,"content_length":"46517","record_id":"<urn:uuid:7a753ccd-6d21-4bf0-a019-abd4f1cf729d>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00437-ip-10-147-4-33.... |
188 helpers are online right now
75% of questions are answered within 5 minutes.
is replying to Can someone tell me what button the professor is hitting...
• Teamwork 19 Teammate
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• You have blocked this person.
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Thanks... | {"url":"http://openstudy.com/users/tux/answered","timestamp":"2014-04-17T16:17:33Z","content_type":null,"content_length":"108078","record_id":"<urn:uuid:8e7f0278-9a40-4ef5-8c0f-d73b5120fc4a>","cc-path":"CC-MAIN-2014-15/segments/1397609530136.5/warc/CC-MAIN-20140416005210-00594-ip-10-147-4-33.ec2.internal.warc.gz"} |
Tangent to the curve from a parametric equation
September 26th 2012, 06:28 AM
Tangent to the curve from a parametric equation
I've got this question I've been labouring over.
The parametric equations of a curve are : x = 1 + 2sin^2Ɵ, y = 4tanƟ.
From a previous question I found dy/dx to be 1 / (sinƟcos^3Ɵ).
... | {"url":"http://mathhelpforum.com/calculus/204111-tangent-curve-parametric-equation-print.html","timestamp":"2014-04-18T21:17:57Z","content_type":null,"content_length":"15731","record_id":"<urn:uuid:a8134f64-b403-49c2-abf8-55410cfa5d7a>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416005215-003... |
?: Dedekind
Previous: Spectra
Next: Cantor
What are numbers, and what is their meaning?: Dedekind
Let us recall that by 1850 the subject of analysis had been given a solid footing in the real numbers -- infinitesimals had given way to small positive real numbers, the In particular he was not
satisfied with his geometr... | {"url":"http://www.math.uwaterloo.ca/~snburris/htdocs/scav/dedek/dedek.html","timestamp":"2014-04-18T03:23:01Z","content_type":null,"content_length":"12026","record_id":"<urn:uuid:65f205d1-03e8-4d23-ae34-8111c6376a68>","cc-path":"CC-MAIN-2014-15/segments/1397609532480.36/warc/CC-MAIN-20140416005212-00016-ip-10-147-4-33... |
OP-SF WEB
Extract from OP-SF NET
Topic #2 ------------ OP-SF NET 16.5 ----------- September 15, 2009
From: Marcel de Bruin and Tom Koornwinder
Subject: Henk G. Meijer 1940-2009
Henk G. Meijer, professor emeritus at Delft University ... | {"url":"http://math.nist.gov/opsf/personal/meijer.html","timestamp":"2014-04-21T02:03:27Z","content_type":null,"content_length":"2630","record_id":"<urn:uuid:f75bd9a0-e9a2-4a38-812b-8234c3098679>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-20140416005219-00473-ip-10-147-4-33.ec2.internal.warc.gz"... |
N Richland Hills, TX Algebra 1 Tutor
Find a N Richland Hills, TX Algebra 1 Tutor
...When I was in high school, I would help my classmates in every subject from English to government to calculus. I love tutoring because the one-on-one setting allows me to help each student
individually with the things they are strug... | {"url":"http://www.purplemath.com/N_Richland_Hills_TX_algebra_1_tutors.php","timestamp":"2014-04-17T22:07:54Z","content_type":null,"content_length":"24523","record_id":"<urn:uuid:068a505e-16d7-4c04-be3d-7b8e9e4e2fc4>","cc-path":"CC-MAIN-2014-15/segments/1397609532128.44/warc/CC-MAIN-20140416005212-00643-ip-10-147-4-33.... |
[R] Is this correct?
[R] Is this correct?
Rlover lmoto001 at fiu.edu
Mon Nov 24 03:45:55 CET 2008
I have to answer the following question for a homework assignment.
A researcher was interested in whether people taking part in sports at
university made more money after graduating, taking into account the
students' GPA.... | {"url":"https://stat.ethz.ch/pipermail/r-help/2008-November/180760.html","timestamp":"2014-04-19T17:52:06Z","content_type":null,"content_length":"3789","record_id":"<urn:uuid:81a87418-e871-41d8-a896-a6d140feb00a>","cc-path":"CC-MAIN-2014-15/segments/1397609537308.32/warc/CC-MAIN-20140416005217-00267-ip-10-147-4-33.ec2.... |
Early Life and Education
Godfrey Harold Hardy more commonly known as G.H. Hardy was one of the most prominent mathematicians of all time. Born to mathematically inclined parents, in Surrey, England on 7th February 1877, he
started showing signs of similar affinity from young age. At the age of only two, he could write ... | {"url":"http://www.famous-mathematicians.com/g-h-hardy/","timestamp":"2014-04-18T23:15:11Z","content_type":null,"content_length":"35528","record_id":"<urn:uuid:4e9d4251-e8a5-425b-9bb4-dae40a0666e4>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00508-ip-10-147-4-33.ec2.internal.warc.g... |
Is Math Getting Too Hard?
The Edge Foundation has collected over a hundred essays in response to the question “What is your dangerous idea?“.
I haven’t yet read all of them (75,000 words!), but I thought that Steven Strogatz’s idea was worth mentioning. With reference to the four-colour theorem, classification of simpl... | {"url":"http://www.arsmathematica.net/2006/01/05/is-math-getting-too-hard/","timestamp":"2014-04-17T21:26:47Z","content_type":null,"content_length":"25766","record_id":"<urn:uuid:5a393ff6-fb25-48c8-a30a-ee7b1e6c7e4c>","cc-path":"CC-MAIN-2014-15/segments/1397609532128.44/warc/CC-MAIN-20140416005212-00607-ip-10-147-4-33.... |
Dealing with Dependent Uncertainty in Modelling: A Comparative Study Case through the Airy Equation
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 279642, 12 pages
Research Article
Dealing with Dependent Uncertainty in Modelling: A Comparative Study Case through the Airy Equation
Instituto Universitario d... | {"url":"http://www.hindawi.com/journals/aaa/2013/279642/","timestamp":"2014-04-19T22:13:53Z","content_type":null,"content_length":"594492","record_id":"<urn:uuid:66f5126e-0d58-403d-9740-f9eccd541f52>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00169-ip-10-147-4-33.ec2.internal.warc... |
Japanese Lesson Study
Japanese Lesson Study Summary
Thursday, July 10, 2003
Today we welcomed Stacey and Roy from Provo School District to our group. They were gracious enough to try out our lesson with us.
We received an e-mail from Lars saying the plans look great and he wished he wasn't missing the lesson (he'll be ... | {"url":"http://mathforum.org/pcmi/hstp/sum2003/wg/lesson/journal/data10.html","timestamp":"2014-04-19T09:51:53Z","content_type":null,"content_length":"7718","record_id":"<urn:uuid:d868080c-249d-43b8-9d36-03ed1583ce00>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MAIN-20140416005217-00188-ip-10-147-4-33... |
A mole is the amount of pure substance containing the same number of chemical units as there are atoms in exactly 12 grams of carbon-12 (i.e., 6.023 X 10^23). This involves the acceptance of two
dictates -- the scale of atomic masses and the magnitude of the gram. Both have been established by international agreement. ... | {"url":"http://www.meritnation.com/ask-answer/question/what-is-an-mole-explain-mole-concept/atoms-and-molecules/1469763","timestamp":"2014-04-20T05:54:20Z","content_type":null,"content_length":"164222","record_id":"<urn:uuid:ed79b158-b1ba-43c1-95f0-d3b9aeb33869>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/war... |
mathematical induction
I have to prove this inequality using mathematical induction:
---------------- > 1 + (1/3) + (1/5) + .... + 1/(2n-1).
I'm given that for positive reals a1, a2, a3,....,an where n >= 2 that
the cartesian product of (1 + ai) from i = 1 to n is greater than 1 + a1 + a2 + .... + an.
... | {"url":"http://mathhelpforum.com/algebra/18845-mathematical-induction.html","timestamp":"2014-04-16T19:18:30Z","content_type":null,"content_length":"53366","record_id":"<urn:uuid:df51e58f-fb98-4623-8e87-70ca4d03f68a>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-00430-ip-10-147-4-33.e... |
The Midpoint Formula - Economics Online Tutor
Do you find the information on this page helpful?
The left column of the home page lists all of the economics topics covered in this website. Now,
you can receive a FREE ebook version of the information in this site under the title
Basic Economics for Students and Non-Stude... | {"url":"http://economicsonlinetutor.com/elasticitymidpoint.html","timestamp":"2014-04-20T08:13:17Z","content_type":null,"content_length":"26892","record_id":"<urn:uuid:4a3bcf77-5541-433a-87e9-3b8b2c4a60d5>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00154-ip-10-147-4-33.ec2.internal... |
Early exercise of options
Early exercise of American calls for dividends
This page sets out some typical rules which are employed in the early exercise of an option. However this is not to be construed as advice in any specific case, and you should seek your own
independent advice before making any decisions.
The follo... | {"url":"http://www.asx.com.au/products/equity-options/early-exercise-options.htm","timestamp":"2014-04-20T08:21:57Z","content_type":null,"content_length":"47881","record_id":"<urn:uuid:f9216752-d11b-4083-898b-36f030e1854d>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00402-ip-10-147-... |
Acceleration of the Universe - A.R. Liddle
2.5. Characteristic scales and horizons
The big bang Universe has two characteristic scales
• The Hubble time (or length) H^-1.
• The curvature scale a| k|^-1/2.
The first of these gives the characteristic timescale of evolution of a(t), and the second gives the distance u... | {"url":"http://ned.ipac.caltech.edu/level5/Liddle3/Liddle2_5.html","timestamp":"2014-04-19T06:56:37Z","content_type":null,"content_length":"2489","record_id":"<urn:uuid:b2e0ca66-0d66-4aeb-8e52-42c30cf91a87>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00409-ip-10-147-4-33.ec2.interna... |
"Size" of elemetary particles
I stumbled upon this nice link showing the universe at different scales:
However, if you scroll down to the attometer scale you get to the elementary particles which have been given sizes. Does anyone know what these sizes mean? I thought elementary particles were
dimensionless and so have... | {"url":"http://www.physicsforums.com/showthread.php?s=7fedaff2cc494d5fd32760d7cbddc81b&p=4479163","timestamp":"2014-04-23T20:45:40Z","content_type":null,"content_length":"29731","record_id":"<urn:uuid:d7c17190-6d38-4e32-ada0-a4de030723a1>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-... |
Results 1 - 10 of 44
- Handbook of Philosophical Logic , 1984
"... ed to be true under the valuation u iff there exists an a 2 N such that the formula x = y is true under the valuation u[x=a], where u[x=a] agrees with u everywhere except x, on which it takes
the value a. This definition involves a metalogical operation... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=529953","timestamp":"2014-04-17T07:32:27Z","content_type":null,"content_length":"38601","record_id":"<urn:uuid:6967a55a-fe8c-4cf4-86f4-dd8df51403ae>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00170-ip-10-147-4-33.ec2.internal.war... |
Linear Algebra Resources
A plane called p has the cartesian equation 4x + 2y - 2z = 7 Given that the plane separates 3D space into two parts. Find the normal vector of the plane, pointing...
Latest answer by
Michael F.
Wilton, CT
[7,-5, 2, -4, 9, -4, 0, 6, 10]
Latest answer by
Parviz F.
Woodland Hills, CA
G =[1/5, 0, 0... | {"url":"http://www.wyzant.com/resources/linear_algebra","timestamp":"2014-04-21T13:24:23Z","content_type":null,"content_length":"63506","record_id":"<urn:uuid:6ffdc073-e935-4c09-ae54-a05020ca2f8e>","cc-path":"CC-MAIN-2014-15/segments/1397609539776.45/warc/CC-MAIN-20140416005219-00461-ip-10-147-4-33.ec2.internal.warc.gz... |
The Instruction Set
Return to Index
The Instruction Set
This section presents an alphabetical listing of the TrueType instruction set. Each description begins with the basic facts. A brief description of the instruction's function... | {"url":"https://developer.apple.com/fonts/TTRefMan/RM05/Chap5.html","timestamp":"2014-04-19T07:07:53Z","content_type":null,"content_length":"234045","record_id":"<urn:uuid:086f44b2-58dd-4802-94ca-86ed7900009b>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00176-ip-10-147-4-33.ec2.int... |
Math Mojo
Math Mojo
a question. They will receive an automated email and will return to answer you as soon as possible. Please
to ask your question.
Kathleen S.
Do you have a math common core test prep PowerPoint Bundle?
Are the vocabulary words in the Math Flipbook Common Core?
Kam Reagan
ESE Teacher
Floral City Eleme... | {"url":"http://www.teacherspayteachers.com/Store/Math-Mojo/Type-of-Resource/Graphic-Organizers","timestamp":"2014-04-17T04:06:56Z","content_type":null,"content_length":"250548","record_id":"<urn:uuid:632e2843-353e-4258-958e-9a77903928eb>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-... |
rewriting a recursive function
Join Date
Feb 2012
Rep Power
Hello, I have to rewrite a recursive function that take a number and raises it to a power. It's sounds simple, but we have to do it in Logn time using X^2n = X^n times X^n. I am having a hard
time implementing this. Here is the ... | {"url":"http://www.java-forums.org/new-java/58553-rewriting-recursive-function.html","timestamp":"2014-04-17T14:05:07Z","content_type":null,"content_length":"88679","record_id":"<urn:uuid:1b5ab3e8-fcb8-4548-97b2-8928f343749d>","cc-path":"CC-MAIN-2014-15/segments/1397609539705.42/warc/CC-MAIN-20140416005219-00481-ip-10-... |
M.S. Applied Physics
This plan provides a strong core of applied physics as well as essential research skills, and prepares you for technical employment in high-technology industries, research institutes, or college
teaching—as well as for further professional study in various fields of applied physics.
This plan can b... | {"url":"http://www7.nau.edu/academiccatalog/2011/Educational_programs/Engineering_Natural_Sciences/Physics_and_Astronomy/MSAppPhysics.htm","timestamp":"2014-04-20T10:47:11Z","content_type":null,"content_length":"20011","record_id":"<urn:uuid:10ac636f-37a3-4ebe-8d0a-0b3220487935>","cc-path":"CC-MAIN-2014-15/segments/139... |
Math Help
September 23rd 2012, 11:27 PM #1
Sep 2012
Sum Subsets
Hi everyone, first time on this forum and I'm thrilled. I was wondering if anyone could perhaps show me where I can find an article, formula, book, etc, that tells me what I want to find below.
You have a number n and a list of numbers. I want... | {"url":"http://mathhelpforum.com/advanced-algebra/203967-sum-subsets.html","timestamp":"2014-04-19T16:11:12Z","content_type":null,"content_length":"32661","record_id":"<urn:uuid:8399aca1-da89-47f6-a32d-d6d2f94e8593>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00581-ip-10-147-4-33.ec... |
Suquamish Math Tutor
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Topic: Can somebody please solve these?
Replies: 1 Last Post: Oct 29, 2009 5:31 PM
Messages: [ Previous... | {"url":"http://mathforum.org/kb/thread.jspa?threadID=1998597","timestamp":"2014-04-19T20:31:42Z","content_type":null,"content_length":"17385","record_id":"<urn:uuid:e8106e32-0755-4d88-af37-3c0d92ecf7f4>","cc-path":"CC-MAIN-2014-15/segments/1397609537376.43/warc/CC-MAIN-20140416005217-00268-ip-10-147-4-33.ec2.internal.w... |
LUCIFER: the first block cipher
One could perhaps quarrel with the title of this section. What about Playfair, or the Hill cipher? But LUCIFER, part of an experimental cryptographic system designed by IBM, was the direct ancestor
of DES, also designed by IBM.
Like DES, LUCIFER was an iterative block cipher, using Feist... | {"url":"http://www.quadibloc.com/crypto/co0401.htm","timestamp":"2014-04-18T23:15:15Z","content_type":null,"content_length":"5083","record_id":"<urn:uuid:46046850-81a0-41ab-bd8e-bfc98658350a>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00550-ip-10-147-4-33.ec2.internal.warc.gz"} |
The distribution of square-free numbers
"... Abstract. We say that an integer n is k–free (k ≥ 2) if for every prime p the valuation vp(n) < k. If f: N → Z, we consider the enumerating function Sk f (x) defined as the number of positive
integers n ≤ x such that f(n) is k–free. When f is the identity then Sk f (x) count... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=1978526","timestamp":"2014-04-19T14:19:41Z","content_type":null,"content_length":"13958","record_id":"<urn:uuid:8c50a1f9-b9fd-475e-b8e8-1a5dee2fa065>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00361-ip-10-147-4-33.ec2.internal.wa... |
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stop that bus!
July 11th 2008, 01:33 AM #1
Jul 2008
A bus moves with k travelers, and it can stop in n stations according to every traveler's request. The probability of getting down for every traveler is the same and independent of other
travelers' getting out. The bus stops given that at least one travele... | {"url":"http://mathhelpforum.com/advanced-statistics/43471-stop-bus.html","timestamp":"2014-04-18T23:42:30Z","content_type":null,"content_length":"101289","record_id":"<urn:uuid:95f24ad9-993a-46cd-bf33-318e5e11f1f0>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00168-ip-10-147-4-33.e... |
s.split() on multiple separators
Antoon Pardon apardon at forel.vub.ac.be
Tue Oct 2 13:03:23 CEST 2007
On 2007-10-02, Hrvoje Niksic <hniksic at xemacs.org> wrote:
> Antoon Pardon <apardon at forel.vub.ac.be> writes:
>> It may be convincing if you only consider natural numbers in
>> ascending order. Suppose you have the... | {"url":"https://mail.python.org/pipermail/python-list/2007-October/431837.html","timestamp":"2014-04-20T05:54:53Z","content_type":null,"content_length":"5024","record_id":"<urn:uuid:43e7aa75-8e2b-4785-8c07-6510f0c43aae>","cc-path":"CC-MAIN-2014-15/segments/1397609538022.19/warc/CC-MAIN-20140416005218-00050-ip-10-147-4-... |
Re: st: what does increase in coefficient value over two time period ind
Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down at the end of May, and its replacement, statalist.org is already up and
[Date Prev][Date Next][Thread Prev][Thread Next][Date... | {"url":"http://www.stata.com/statalist/archive/2012-11/msg00121.html","timestamp":"2014-04-17T15:40:59Z","content_type":null,"content_length":"10457","record_id":"<urn:uuid:fafb1c2f-50cd-4de6-8b8e-deda530af501>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00185-ip-10-147-4-33.ec2.in... |
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Topic: simple statistics question
Replies: 2 Last Post: Mar 20, 2013 3:55 PM
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West Roxbury SAT Math Tutor
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Algebra 2 Tutors
Clinton Township, MI 48035
...rcent of a number; using the order of operations to evaluate expressions; finding the mean, median and mode of a data set; looking for patterns. My GED lessons will explain the problem solving
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Homework Help
Posted by Anna-Marie on Monday, March 3, 2008 at 10:30pm.
1. The sides of a triangle have lenghts x, x+4, and 20. Specify those values of x for which the triangle is acute with the longest side 20.
2. use the information to decide if triangle ABC is acute, right, or obtuse.
AC=13, BC= sq. rt. 34, CD=3
>>i... | {"url":"http://www.jiskha.com/display.cgi?id=1204601404","timestamp":"2014-04-19T15:32:33Z","content_type":null,"content_length":"10216","record_id":"<urn:uuid:e5e78524-d038-4245-ae1a-23c28b0531b0>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-20140423032005-00566-ip-10-147-4-33.ec2.internal.warc.gz... |
- Journal of the American Statistical Association , 1996
"... A critical issue for users of Markov Chain Monte Carlo (MCMC) methods in applications is how to determine when it is safe to stop sampling and use the samples to estimate characteristics of the
distribution of interest. Research into methods of computing the... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=3071743","timestamp":"2014-04-20T19:31:45Z","content_type":null,"content_length":"20960","record_id":"<urn:uuid:461a8f3a-965e-4e09-828a-52128ea9084f>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00400-ip-10-147-4-33.ec2.internal.wa... |