29. January 2014 · Comments Off · Categories: Numerical Analysis

The Gaussian Elimination method reduces a system of linear equations to a simpler form. The method works in two stages:

  • Forward stage
  • Backward (or Back Substitution) stage

Consider the following system of four equations;

a11x1 + a12x2 + a13x3 + a14x4 = b1

a21x1 + a22x2 + a23x3 + a24x4 = b2

a31x1 + a32x2 + a33x3 + a33x3 = b3

a31x1 + a32x2 + a33x3 + a44x4 = b4

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29. January 2014 · Comments Off · Categories: Numerical Analysis

Numerous methods have been devised to solve the systems of linear equations. This shows that no single method is best suited to all situations. These methods should be judged on the basis of their speed and accuracy. Speed is of importance in solving large systems because of the large volume of computations involved and accuracy is necessary because of the round-off errors involved in performing these computations.

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03. January 2014 · Comments Off · Categories: Google

Google is a renowned web search engine owned by Google Inc. It is most used search engine on the world of Internet managing and handling almost more than 3 to 4 billion searches on diurnal basis. It was founded on 4th September, 1998 and the name of its CEO is Larry Page. Google Inc. is an US multinational cooperation specialized in internet related services and products. Internet Services comprises cloud computing, software and online advertisements. Mostly Google earns its profit from the service of AdWords (newly launched Keyword Planner).

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21. August 2013 · Comments Off · Categories: Facebook, Social Networking Media

Facebook is a world’s largest online social networking media comprising more than one billion users exchanging their views. It was developed in February 2004 by Mark Zuckerberg with his college mates and fellow Harvard University students Eduardo Saverin, Andrew McCollum, Dustin Moskovitz and Chris Hughes. Users having age 13 years or older can register at Facebook, complete the profile and avail numerous services offered by the Facebook.

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14. August 2013 · Comments Off · Categories: PHP, Programming

It is often useful to store related values in a single variable, it is recommended to use Arrays for single list. An array is a data structure that stores one or more similar type of values in a single value. For example if you want to store 1000 values then instead of defining 1000 variables, it’s easy to define an array of 1000 length. There are three different kinds of arrays and each array value is accessed using an ID which is called array index.

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