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Search found 221 results on 9 pages for 'algebra'.

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• Matlab matrix translation and rotation multiple times

  - by pinnacler

  I have a map of individual trees from a forest stored as x,y points in a matrix. I call it fixedPositions. It's cartesian and (0,0) is the origin. I would like 0/360 degrees to be the top of the screen and 90 degrees to be to the right. Given a velocity and a heading, i.e. .5 m/s and 60 degrees (2 o'clock equivalent on a watch), how do I rotate…

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• Is there really such a thing as "being good at math"?

  - by thezhaba

  Aside from gifted individuals able to perform complex calculations in their head, I'm wondering if proficiency in mathematics, namely calculus and algebra, has really got to do with one's natural inclination towards sciences, if you can put it that way. A number of students in my calculus course pick up material in seemingly no time whereas I,…

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• How do I become better in math, after being a programmer for several years.

  - by loxs

  I've had quite a weird career till now. First I graduated from a medical school. Then I went into marketing (pharmaceuticals). And then umm, after some time, I decided to go for my (till then) hobby and became a "professional" programmer. I've been quite successful at this ever since. I have quite some languages "under my belt". I earn not…

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• Can Haskell's monads be thought of as using and returning a hidden state parameter?

  - by AJM

  I don't understand the exact algebra and theory behind Haskell's monads. However, when I think about functional programming in general I get the impression that state would be modelled by taking an initial state and generating a copy of it to represent the next state. This is like when one list is appended to another; neither list gets…

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• Interesting Scala typing solution, doesn't work in 2.7.7?

  - by djc

  I'm trying to build some image algebra code that can work with images (basically a linear pixel buffer + dimensions) that have different types for the pixel. To get this to work, I've defined a parametrized Pixel trait with a few methods that should be able to get used with any Pixel subclass. (For now, I'm only interested in operations…

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• R Random Data Sets within loops

  - by jugossery

  Here is what I want to do: I have a time series data frame with let us say 100 time-series of length 600 - each in one column of the data frame. I want to pick up 4 of the time-series randomly and then assign them random weights that sum up to one (ie 0.1, 0.5, 0.3, 0.1). Using those I want to compute the mean of the sum of the 4…

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• C# 4.0: Covariance And Contravariance In Generics

  - by Paulo Morgado

  C# 4.0 (and .NET 4.0) introduced covariance and contravariance to generic interfaces and delegates. But what is this variance thing? According to Wikipedia, in multilinear algebra and tensor analysis, covariance and contravariance describe how the quantitative description of certain geometrical or physical entities changes when…

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• How to find minimum of nonlinear, multivariate function using Newton's method (code not linear algeb

  - by Norman Ramsey

  I'm trying to do some parameter estimation and want to choose parameter estimates that minimize the square error in a predicted equation over about 30 variables. If the equation were linear, I would just compute the 30 partial derivatives, set them all to zero, and use a linear-equation solver. But unfortunately the equation…

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• Going from a math career to a cs career: how to do it?

  - by Joseph

  Hey, I'm looking for some advice on how to successfully make the transition from mathematics to CS. My academic background is in mathematics (BS and MSc), and I've taken loads of math courses as well. You name it, and I took it: Measure Theory, Algebra, PDES, Manifolds, Complex Analysis, etc. I progressed quite far along…

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• How do we, as a community, help encourage programming in public schools? (Or state Schools for the U

  - by NoMoreZealots

  PRIMARY MOTIVATION My office gets involved with the "First Robotics" competitions and one thing that lingers year to year is the students typically have no preparation for doing even simple programming as part of the public schools system. While the science classes provide some basic grasp of mechanical and electrical…

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• A Guided Tour of Complexity

  - by JoshReuben

  I just re-read Complexity – A Guided Tour by Melanie Mitchell , protégé of Douglas Hofstadter ( author of “Gödel, Escher, Bach”) http://www.amazon.com/Complexity-Guided-Tour-Melanie-Mitchell/dp/0199798109/ref=sr_1_1?ie=UTF8&qid=1339744329&sr=8-1 here are some notes and links:   Evolved from…

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• CodePlex Daily Summary for Thursday, March 11, 2010

  CodePlex Daily Summary for Thursday, March 11, 2010New ProjectsASP.NET Wiki Control: This ASP.NET user control allows you to embed a very useful wiki directly into your already existing ASP.NET website taking advantage of the popula...BabyLog: Log baby daily activity.buddyHome: buddyHome is a project that can…

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• CodePlex Daily Summary for Monday, May 03, 2010

  CodePlex Daily Summary for Monday, May 03, 2010New Projects.radiko: エアログラス採用のシンプルなradiko(http://radiko.jp/)クライアントです。タスクトレイのアイコンからラジオ局の切り替えができます。7Scale: EmptyB2C MVC Plattform: The B2C MVC Plattform aims to be pluggable site framework to help small busisness accomplish basic tasks between business and…

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• CodePlex Daily Summary for Sunday, May 02, 2010

  CodePlex Daily Summary for Sunday, May 02, 2010New ProjectsAdventureWorks in Access: AdventureWorks database in Access format. Data has been ported in Access starting from Adventure Works database for SQL Server 2008.amplifi: This project is still under construction. We will add more information…

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• CodePlex Daily Summary for Sunday, June 06, 2010

  CodePlex Daily Summary for Sunday, June 06, 2010New ProjectsActive Worlds Dot Net Wrapper (Based on AwSdk): Active Worlds Dot Net Wrapper (Based on AwSdk)Combina: Smart calculator for large combinatorial calculations.Concurrent Cache: ConcurrentCache is a smart output cache library extending…

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• CodePlex Daily Summary for Sunday, September 02, 2012

  CodePlex Daily Summary for Sunday, September 02, 2012Popular ReleasesThisismyusername's codeplex page.: HTML5 Multitouch Example - Fruit Ninja in HTML5: This is an example of how you could create a game such as Fruit Ninja using HTML5's multitouch capabilities. This example isn't responsive…

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• CodePlex Daily Summary for Monday, September 03, 2012

  CodePlex Daily Summary for Monday, September 03, 2012Popular ReleasesMetodología General Ajustada - MGA: 03.01.03: Cambios Aury: Ajuste del margen del reporte. Visualización de la columna de Supuestos en la parte del módulo de Decisión. Cambios John: Integración de código con cambios…

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• CodePlex Daily Summary for Friday, June 04, 2010

  CodePlex Daily Summary for Friday, June 04, 2010New Projects23 Umbraco addons: 23 Umbraco addonsAdd-ons for EPiServer Relate+: In the Add-ons for EPiServer Relate+ you will find add-ons, extensions and modules that work together with EPiServer Relate+.Advanced Mail Merge (AMM) for…

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• CodePlex Daily Summary for Tuesday, May 04, 2010

  CodePlex Daily Summary for Tuesday, May 04, 2010New ProjectsAlbum photo de club - Club's Photos Album: Un album photos permettant d'afficher les photos et le détails des membres d'un club - Photo album allowing to view photos and details of the membersBlog.Net Blogging Components:…

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• CodePlex Daily Summary for Wednesday, March 31, 2010

  CodePlex Daily Summary for Wednesday, March 31, 2010New ProjectsBase Class Libraries: The Base Class Libraries site hosts samples, previews, and prototypes from the BCL team. BB Scheduler - BroadBand Scheduler: Broadband Scheduler is highly useful as it helps the user to set the…

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• CodePlex Daily Summary for Saturday, May 22, 2010

  CodePlex Daily Summary for Saturday, May 22, 2010New ProjectsDocument Toolkit Extensions: Document Toolkit Extensions provide a variety of samples, document converters and helpers for Document Toolkit, a fast, feature-rich and 100% clien...dream: dreamEnhanced Web Controls: The…

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• CodePlex Daily Summary for Tuesday, September 04, 2012

  CodePlex Daily Summary for Tuesday, September 04, 2012Popular ReleasesPE file reader: READPE-e9ff717a638d.zip: Introduced some new code which parses the IMAGENTHEADERS. At the moment the command line options dosheader and imagentheaders are working and and example of their…

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• CodePlex Daily Summary for Saturday, September 01, 2012

  CodePlex Daily Summary for Saturday, September 01, 2012Popular ReleasesDotNetNuke® Form and List: 06.00.04: DotNetNuke Form and List 06.00.04 Don't forget to backup your installation before upgrade. Changes in 06.00.04 Fix: Sql Scripts for 6.003 missed object qualifiers…

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• CodePlex Daily Summary for Monday, August 27, 2012

  CodePlex Daily Summary for Monday, August 27, 2012Popular ReleasesHome Access Plus+: v8.0: v8.0827.1800 RELEASE CHANGED TO BETA Any issues, please log them on http://www.edugeek.net/forums/home-access-plus/ This is full release, NO upgrade ZIP will be provided as most…

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• CodePlex Daily Summary for Wednesday, August 29, 2012

  CodePlex Daily Summary for Wednesday, August 29, 2012Popular ReleasesDiscuzViet: DzX2.5TV Stable Version: Discuz-X2.5-TV-StableMath.NET Numerics: Math.NET Numerics v2.2.1: Major linear algebra rework since v2.1, now available on Codeplex as well (previous versions were…

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