Imagine a region in space where the force of gravity is so strong that nothing—not even light—can escape. A region with physical conditions so extreme that they have not yet been reproduced in any terrestrial laboratory. A region so dense that an object as tiny as a walnut would have the same mass as our entire planet.
This phenomenon—first formed in the equations of Einstein and popularized in the stories of science-fiction authors—is a black hole: one of the most exotic, mind-boggling, and profound subjects in astrophysics.

The program for the finite-element analysis of complicated scientific and technical problems. The solution of any problem is based on the numerical solution of partial differential equations finite element method. The spectrum of tasks that lend themselves modeliroaniyu in the program is extremely broad. From the classic problems of heat conduction, diffusion and wave propagation to the nonlinear equations of Korteweg de Vries and Burgers.

A First Course in Differential Equations with Modeling Applications, 9th Edition strikes a balance between the analytical, qualitative, and quantitative approaches to the study of differential equations.

This collection includes - best 40 portable programs in 2009!

Title: 40 best programs in 2009 (Portable Soft)
Year: 2009
Interface: English, Russian
OC: All Windows
Activation: All Inclusive
Size: 600 MB

Differential Equations are the language in which the laws of nature are expressed. Understanding properties of solutions of differential equations is fundamental to much of contemporary science and engineering. Ordinary differential equations (ODE's) deal with functions of one variable, which can often be thought of as time. Topics include: Solution of first-order ODE's by analytical, graphical and numerical methods; Linear ODE's, especially second order with constant coefficients; Undetermined coefficients and variation of parameters; Sinusoidal and exponential signals: oscillations, damping, resonance; Complex numbers and exponentials; Fourier series, periodic solutions; Delta functions, convolution, and Laplace transform methods; Matrix and first order linear systems: eigenvalues and eigenvectors; and Non-linear autonomous systems: critical point analysis and phase plane diagrams.

This course covers vector and multi-variable calculus. It is the second semester in the freshman calculus sequence. Topics include vectors and matrices, partial derivatives, double and triple integrals, and vector calculus in 2 and 3-space.

Book Review:
Digital photography is for everybody. Although this book is geared for beginners and intermediates, there's information here that can help advanced amateurs and working pros considering the switch from film to digital photography.

MathMagic Pro Edition for QuarkXPress is an equation editor mainly for use with QuarkXPress 6.x ~ 8.x applications in editing any mathematical expressions and symbols with WYSIWYG interface and various powerful features.

RPN Engineering Calculator was developed to offer you more than 240 solutions with six unique keypads to choose from. RPN Engineering Calculator has a complete help system with individual tips for all but the most ordinary functions and a Tip of the Day feature for new users. You can select fixed, scientific or engineering notation and degrees, radians, or grads as required. You can save and print the contents of the running tape display.

Maple is the essential technical computing software for today’s engineers, mathematicians, and scientists. Whether you need to do quick calculations, develop design sheets, teach fundamental concepts, or produce sophisticated high-fidelity simulation models, Maple’s world-leading computation engine offers the breadth and depth to handle every type of mathematics. The result of over 25 years of cutting-edge research and development, Maple combines the world’s most powerful mathematical computation engine with an intuitive, “clickable” user interface. Its smart document environment automatically captures all of your technical knowledge in an electronic form that seamlessly integrates calculations, explanatory text and math, graphics, images, sound, and diagrams.

Algebra II is the crucial high school mathematics course in preparing for a college education. College students who have not mastered Algebra II find themselves taking a remedial, noncredit course called Intermediate Algebra. If you are struggling with Algebra II or are preparing to enter college or are currently in college and are struggling with Intermediate Algebra, then this Algebra II video series is for you. Or if you are an adult who has always wanted to master the beauty of mathematics and now wants the opportunity to do so, this course can fulfill that dream. Download the files immediately before they delete it again.

Algebra 1 is one of the most intimidating subjects for math students. The reason is that prior to this point students have been dealing with numbers such as "3" and "43" and now suddenly in Pre-Algebra And Algebra 1 they begin to deal with variables such as "x" and "y". This concept at first can seem a bit daunting with all of those letters running around! The Math Video Tutor is named "Fractions Thru Algebra" because it starts off with the very basics - fractions - and from there slowly progresses into Pre-Algebra and Algebra 1. A great deal of time is spent on fractions and the concept of a negative number before the student is presented with Algebraic Expressions, which is where most Algebra 1 Textbooks begin. In this way a solid foundation is laid upon which Algebra 1 can be conquered.

Physics is frequently one of the hardest subjects for students to tackle because it is a combination of two of the toughest subjects for most students: Math and Word Problems. If you understand the math but don't do well in word problems then you will have trouble. And if you understand the word problem but have no idea where to begin with the math, again, you will not do well.

The Trigonometry And Pre-Calculus Tutor is a 5 hour DVD course geared to fully prepare a student to enter university level Calculus. Most students that have trouble with Calculus discover quickly that the root cause of their difficulty is actually that they have never mastered essential material in Trigonometry. For instance, a Calculus textbook will assume that the student is comfortable converting between degrees and radians and can use the unit circle to mentally calculate the Sin of an angle without a calculator. These topics and many other essential concepts are presented in this DVD course with exceptional clarity so that the student will feel well prepared to move into Calculus and Physics.

Maxwell Render™ is a physically correct, unbiased rendering engine. By calculating complex light interactions, Maxwell Render is capable of simulating light exactly as in the real world. Unbiased means Maxwell Render™ does not use tricks to imitate real world behavior like other renderers – everything is reproduced as it is through governing physical equations.
Maxwell Render™ can fully capture all light interactions between all elements in a scene no matter how complex they are. All lighting calculations are performed using spectral information and high dynamic range data.

Tube Saturator is the world’s most accurate real time tube amp plug-in. Unlike other tube simulators, which use radically simplified models, Tube Saturator uses state of the art circuit simulation technology to capture every nuance of an analog circuit. With circuit simulation, the analog schematic completely defines the signal processing. The schematic is converted into a system of non-linear differential equations which is solved at each sampling period, in realtime. That’s mathematical talk for “it sounds exactly like the analog circuit”.

The circuit simulation technology is extremely CPU intensive, and hence we are only able to simulate very simple circuits. Tube Saturator is in fact a basic circuit consisting of a Baxandall type three-band EQ feeding two 12AX7 triode preamp stages. It’s similar to preamp stages you’d find in a guitar amp, but it is by no means a complete guitar amplifier model, that would be way too expensive to simulate even with today’s fast CPUs. However, it is extremely accurate, and hence you can get the same distortion and tonal characteristics that you’d expect from a real tube preamp.

Berkeley Madonna is arguably the fastest, most convenient, general purpose differential equation solver available today. It is relatively inexpensive and runs on both Windows and Mac OS. Developed on the Berkeley campus under the sponsorship of NSF and NIH, it is currently used by academic and commercial institutions for constructing mathematical models for research and teaching.

Wolfram Mathematica provides you with the world’s largest collection of algorithms in a single system each able to operate across the widest applicable scope of numeric, symbolic, or graphical input. Mathematica’s numerics support any precision or number size across all functions, in contrast to the typical fixed 16-digit limitation found in other computing systems. Without this you may be unable to produce answers accurate even to a small number of digits, as the internal workings of many calculations require much higher-precision input than they produce as output. Functions or data, discrete objects, diagrams, images, or annotations Mathematica’s visualization engine powers professional-quality static or dynamic representations, automatically optimizing the balance between computational efficiency and visual sophistication.

Algebra 1 is one of the most intimidating subjects for math students. The reason is that prior to this point students have been dealing with numbers such as "3" and "43" and now suddenly in Pre-Algebra And Algebra 1 they begin to deal with variables such as "x" and "y". This concept at first can seem a bit daunting with all of those letters running around! The Math Video Tutor is named "Fractions Thru Algebra" because it starts off with the very basics - fractions - and from there slowly progresses into Pre-Algebra and Algebra 1. A great deal of time is spent on fractions and the concept of a negative number before the student is presented with Algebraic Expressions, which is where most Algebra 1 Textbooks begin. In this way a solid foundation is laid upon which Algebra 1 can be conquered.

AbiWord is a free word processing program similar to Microsoft Word. It is suitable for typing papers, letters, reports, memos, etc. It is designed to integrate perfectly with the operating system it runs on. It will take advantage of the functionality provided by the system, such as image loading or printing capabilities.

Working Model 2D is an award-winning motion simulation package that allows engineers, designers, and animators to build and analyze mechanical systems quickly on desktop computers. Users can import geometries from popular CAD systems or draw them in Working Model 2D. Click the Run button and watch your designs spring to life. Graphs and digital display tools let you measure standard system variables, or use a built-in equation language to graph any calculation.

The portable app does not require installation. Make as many copies as you need. Carry it in a flash drive and use on any computer, even without administrator access. No change of any setting on the host computer. No more conflicts with other applications. No more 'hijacking' of file types.

Cobalt matches professional power with speed and ease of use for flexible 3D modeling. Available for both Macintosh and Windows, Cobalt lets creative people work without worrying about their software. Designers save time and money by moving quickly from conception through completion in the real world of last minute changes. Primarily for designers, engineers and inventors, Cobalt leads the Ashlar-Vellum™ product line with on-demand, dimensionally constrained and equation-driven parametrics that make creating variations on a design faster and easier than ever before.

UniPlot was developed to visualize and analyze test data. With only a few mouse clicks, you can transform your data into 3D surface maps with color zones, contour maps with color fill, or plot 2D data into diagrams with several axes. Text objects, scanned photos and other drawing and labeling elements can be easily inserted into the document with OLE.

With Scientific WorkPlace , you can create, edit, and typeset mathematical and scientific text more easily than ever before. The software is based on an easy-to-use word processor that completely integrates writing mathematics and text in the same environment. With the built-in computer algebra system, you can perform computations right on the screen.