Freeware: Differential Equations

	ODEcalc  License: Freeware
	ODEcalc for Windows: An Ordinary Differential Equation (ODE) Calculator! State your equation and boundary or initial value conditions and it solves your problem. Plots solution y and derivative ydot versus x. Solves most Boundary Value Problems (BVP) and Initial Value Problems (IVP) for Nth order ODE. ODE may be non-linear, implicit, and any order. Source code included ... it's short! Great teaching tool! Helps students understand difference in BVP and IVP plus their importance in solving practical ODEs. ODE and algebraic system of equations may be solved using the methodology in this demo. Hardcopy prints in Windows is now available. This is a Fortran Calculus demo application. Author: Optimal Designs Enterprise| Date: 24-09-2008 | Size: 2077 KB
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	20sim Viewer  License: Freeware
	20-sim is an advanced modeling and simulation package for Windows. With 20-sim you can simulate the behavior of dynamic systems, such as electrical, mechanical and hydraulic systems or any combination of these. 20-sim models may use iconic diagrams, bond graphs, block diagrams as well as differential equations. Used in mechatronics, control engineering, robotics, mechanical engineering, hydraulics etc. From the same lab as Tutsim. Author: Christian Kleijn| Date: 24-12-2003 | Size: 25328 KB
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	OpenDDPT  License: Freeware
	The physic of the real world can be formulated into mathematical form using differential equations. Differential equation and systems of differential equations are the natural language trough we can describe any real devices like electronic circuit, automatic controls, elettro-magnetic wave emission or any other engineering problems. The purpose of OpenDDPT project is to build a software that can aids people to build automatically these control devices. The strategy used by this software is based on the concept that differential equations generally are parameters dependent so we can found optimal control parameters using an optimization template. The optimization tool-box used by OpenDDPT is an innovative non-convex second-order method that replaces the hessian structure (the hessian matrix has heavy memory storage and an expensive computational-cost) with directional-derivatives , reducing the second order information computational cost of one order without approximation.Control's local informations (i.e. gradient and it's directional derivate) are found trough an extended form of the back-propagation rule used for neural-network and that new extended form can perform not only weighted-sum and sigmoidal saturations but also multiplication ,addition, time-delay and any non-linearity and it can be used as a generic expression for realizing any non linear discrete time control device. Author: Centi Riccardo| Date: 08-01-2006 | Size: 2235 KB
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	Mixed-Up Math  License: Freeware
	A free mathematical puzzle where equations are all mixed up. One solution per puzzle. Find the correct equations to solve the puzzle. Equations go in all directions - follow the arrows. Author: Knowledge Probe Inc| Date: 01-07-2002 | Size: 921 KB
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	Metalogic Calculator  License: Freeware
	This calculator allows natural entry of equations (i.e. 17-(9*8) - 7 + 34.23). Then it goes beyond just giving you a result, the "steps" box, shows you how it solved the equation step by step. Results are given simultaneously in dec/hex/oct/bin. Great for students and home use. It takes the mystery out of solving complex equations. Author: Metalogic Software| Date: 18-09-2004 | Size: 559 KB
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	SurfX3D  License: Freeware
	Surface Explorer 3D plots mathematical surfaces in 3D. User defined surface equations can be explicit, implicit, or parametric. Surface and color equations are specified by user. Can export to clipboard, VRML, POV, DXF, printer. MFC C++ source code included. Freeware. Author: Surface Explorer 3D| Date: 01-03-2006 | Size: 1480 KB
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	ICE Mirror  License: Freeware
	This utility creates or maintains an exact duplicate of the original directory. ICE Mirror will compare the mirrored directory to the master directory and correct any disparities. ICE Mirror allows ultra fast mirroring because it performs incremental updates. In other words it only copies files that have changed. If only a few files have been updated, it performs very fast. Also ICE Mirror allows making differential updates. The differential updates are very useful if you are use read-only media (CD-R, DVD-R, DVD+R, etc.). There are two steps in differential updates: 1. Comparison the master directory and the mirrored directory. 2. Copying all new files from the master directory to the secondary mirrored directory. In other words it only copies files that have changed in the mirrored directory to the secondary mirrored directory. Author: ICE Graphics| Date: 01-03-2004 | Size: 443 KB
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	RF21  License: Freeware
	RF21 for Windows is a scientific calculator, plotter, programming and numeric system in one. It allows for permanent installation of a user's own commented functions and libraries. Such user functions may have one or several arguments and values. Works as an archive at the same time, with integrated searchable database, to let you find and reuse materials created years ago. Each function self-reassembles when its name is called, autonomously searching the libraries for all components needed. Predefined functions include gamma, zeta, psi and Bessel functions, error integral, cumulative Binomial distribution and more. On top of these and the user libraries, the program's numeric and plotting capabilities can be used, including: Numeric derivation and integration, Monte Carlo simulations, linear equations, matrix inversion and eigenvalues, nonlinear equation systems, n-dimensional function minimizer (Dennis & Schnabel method), Runge Kutta method for (systems of) differential equations, accelerated summation of series. Fraction reckognizer. Fast screenplots and an environment for designing printable plots, which may as well be exported to -.GIF and -.BMP files. Ample support for both simple and parametric plots, composition of several curves into one picture, drawing of directional or vector fields. Comes with standard libraries covering areas of science and mathematics. Some 200 standard functions, see author's homepage for a systematic reference of these. Author: Christoph Hohmann| Date: 21-05-2004 | Size: 1107 KB
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	Yildun Internet Backup  License: Freeware
	The yildun software and service is based on a binary differential technology of top quality. After sending the initial backup version into our backup servers, the product is capable of communicating through dsl/rdsi conventional lines, the binary variation of hundreds of Gigabyte of information of big organizations. The yildun remote-backup service permits the users that own the data to run the scheduled backup copies on our servers. Once the first copy of your information is made, you will be able to start enjoying our binary-differencial online copies that our service provides. All the data that needs to be recovered will only be accesible by you at any time. The data that needs to be recovered will only be accessible by you at any time, being able to download any of the different versions of the information that the program stores. Make use of a triplicate support for your information: the fast recoverly that provides the last copy on your local system, the security of being able to recover remotely when a catastrophe happens and warranty that provides having the data replicated on two of our servers. Yildun is also a supervised service, our systems and technicians carry a daily supervision of your copies, letting you know about any contingency that may have occurred. You will always be informed about the state of the copies, whether they are correctly done or not. You will also receive a monthly report about your backup system, complying with the legislation of the data protection. The yildun free version enables the user to carry out security copies during a year to our remotely located servers in the network. The limitations of the free service are the number of versions of the safeguarded data that can be restored (which is limited to 2) and the real space that the safeguarded data can take up in our server (which is limited to 1GigaByte). The trial version is available during a month, but permits safeguarding 7 different incremental copies. Author: Insimatek| Date: 01-07-2008 | Size: 19128 KB
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	Algebrus  License: Freeware
	Algebrus is a powerful software for scientific and general purpose calculations. It provides user with numerous mathematical and analysis functions, and allows unlimited extension of its functionality by means of user-defined types, operators, routines, and libraries. Extendibility is based on a built-in simple to learn and yet powerful programming language XPascal. Algebrus can be used both as a simple "evaluate-while-typing" calculator and as a powerful mathematical analysis application, which includes 2D and 3D graphic plots of functions and data, command line execution console, and a syntax-highlighted XPascal editor as a part of the integrated development environment. Algebrus has the following major features. Calculations: - Vector and matrix operations - 2D and 3D graphic plots of functions and data - More than 50 built-in mathematical routines - User-programmed procedures and functions - Solving of linear algebraic systems - Solving of ordinary differential equations User interface: - Compact and full user interface modes - Simple graph plotting user interface - Exporting graphics in standard formats - "Evaluate-while-typing" mode - Decimal, binary, and hexadecimal integer formats - Syntax-highlighted XPascal editor - Syntax-highlighted command console - Context based help search - Highly customizable user interface - Preloading external libraries XPascal Programming language: - Native support for vectors and matrices - User-defined operators - Complex structured user-defined types - Chained assignment and relational expressions - Dynamic and static arrays - Efficient array access loop statements - Rich on high level routines for scientific analysis - Easy to learn simplified yet powerful grammar Author: Astrise Corporation| Date: 01-02-2005 | Size: 1048 KB
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	FlatGraph  License: Freeware
	Plotting functions (usual and parametric) with more possibilities. Differentiation of any order (with simplification). Construction of tangents to the graph. The simple and clear interface with the detailed documentation and examples of work. The program is designed both for inexperienced and the professional user as in it are combined the intuitive interface and professional functions. FlatGraph allows: - To enter one or several functional expressions of any complexity for display and (or) their differentiation; - To carry out symbolical differentiation for the specified order of a derivative, and also to carry out simplification of the received derivative; - To investigate "alive" changing of various parameters of functions with simultaneous display of new graphs that allows to define influence of parameters of functions on their form; - To use automatic or manual scaling schedules of functions for linear scales; - To display parametric functions, for example, ellisoid, cardioid, Bernoulli lemniscate and other similar graphs (where abscissa and ordinate depend on one parameter 't'); - To solve the equations, system of the equations and inequalities by graphic way; - To define and display a tangent to the graph of function in a point x0 (it is set by the user). FlatGraph has the simple and clear interface, detailed user guide and examples of work. Author: Vitaliy Subbotin| Date: 19-01-2005 | Size: 567 KB
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	Mathematics  License: Freeware
	Number Systems - Number Conversion - Number Types - Compound Measures Roots - Angles and Parallels - Triangle Ratios - Triangle Angles - Percentages - Ratios - Fractions - Vectors - Circle Angles - Laws - Algebra 0. - Algebra 1. - Algebra 2. - Mathematical Rules - Powers and Indices - Geometry - Simplifying - Equations - Graphing - Slope and Translation - Curves and Angle Conversion - Personal Finance - Data Analysis - Binary Numbers - Binary Arithmetic. Author: eptsoft| Date: 01-01-2007 | Size: 4345 KB
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	Formulator Express  License: Freeware
	Formulator is a powerful interactive mathematical expressions editor. It uses WYSIWYG-style editing and allows creating mathematical equations through simple point-and-click techniques. Formulator is the intelligent software, aware of presentation or semantics face of mathematics. Advanced editing features are available by means of MathML authoring techniques which help Formulator to implement effective solutions for a wide audience of software developers, educators, students, STM publishers, etc. Among the distinguishing features of Formulator is component versions support (in the form of ActiveX Control or Automation Server) and extensive support of MathML 2.0 (Presentation, Content and Mixed markups) through easy-to-use graphical interface. Exporting functionality of Formulator is extremely useful when a user wants to share you math documents. With the help of Formulator users have a freedom to publish their work in so different ways as MathML plain text fragments, XHTML documents with MathML inlined, raster images, vector graphics (EMF). Formulator is visually oriented tool. It proposes intuitive and easy-to-use ways to create and edit both Presentation and Content MathML markups. Comprehensive collection of mathematical symbols and templates of Formulator is useful both to users having publishing needs and to those who is oriented on analysis of expressions meaning. Field of applications for Formulator is really wide, since it comprises both a standalone application edition, run as a separate program, and a component edition, that is, an ActiveX control. When using the Formulator ActiveX Control this revolutionary functionality makes it simple to develop new software products, keenly aware of the mathematical typesetting and semantics rules. This helps to accelerate application development in computer-aided education, computer algebra systems, authoring tools, and many other applications for mathematics, science, business, economics, etc. Author: Hermitech Laboratory| Date: 16-09-2006 | Size: 3060 KB
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	Formulator Express ActiveX Control  License: Freeware
	Formulator is a powerful interactive mathematical expressions editor. It uses WYSIWYG-style editing and allows creating mathematical equations through simple point-and-click techniques. Formulator is the intelligent software, aware of presentation or semantics face of mathematics. Advanced editing features are available by means of MathML authoring techniques which help Formulator to implement effective solutions for a wide audience of software developers, educators, students, STM publishers, etc. Among the distinguishing features of Formulator is component versions support (in the form of ActiveX Control or Automation Server) and extensive support of MathML 2.0 (Presentation, Content and Mixed markups) through easy-to-use graphical interface. Exporting functionality of Formulator is extremely useful when a user wants to share you math documents. With the help of Formulator users have a freedom to publish their work in so different ways as MathML plain text fragments, XHTML documents with MathML inlined, raster images, vector graphics (EMF). Formulator is visually oriented tool. It proposes intuitive and easy-to-use ways to create and edit both Presentation and Content MathML markups. Comprehensive collection of mathematical symbols and templates of Formulator is useful both to users having publishing needs and to those who is oriented on analysis of expressions meaning. Field of applications for Formulator is really wide, since it comprises both a standalone application edition, run as a separate program, and a component edition, that is, an ActiveX control. When using the Formulator ActiveX Control this revolutionary functionality makes it simple to develop new software products, keenly aware of the mathematical typesetting and semantics rules. This helps to accelerate application development in computer-aided education, computer algebra systems, authoring tools, and many other applications for mathematics, science, business, economics, etc. Author: Hermitech Laboratory| Date: 16-09-2006 | Size: 6212 KB
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	SQLBackupAndFTP  License: Freeware
	What can SQLBackupAndFTP do:    SQLBackupAndFTP can schedule daily jobs to   * Backup your SQL Server databases   * Zip the backups   * FTP the backups to a remote FTP Server or save it on the LAN   * Send you an e-mail confirmation on job's success or failure.      What's unique about SQLBackupAndFTP:     * Simple: SQLBackupAndFTP is unique in it's simplicity - the whole "set it and forget it" job can be done in a single form with no tabs in a minute of two.   * All-in-one: The whole backup - zip - ftp - confirm process is integrated as 1-2-3 (4)   * Inexpensive or free: Comparable functionality starts in programs from $200. In SQLBackupAndFTP you can get if free (if you need to schedule one-two databases), or just for $49 for unlimited scheduled SQL Server database backups.   * Credible: Created by a US based software company with years in .NET and SQL Server experience      Where should SQLBackupAndFTP be used:    SQLBackupAndFTP is ideal for any SQL Server database where backups have to be sent daily to a remote FTP server. It would save maintenance time on any SQL Server version, but it is especially useful for SQL Server Express 2005 and SQL Server Express 2008, since they don't have built in tools for backup at all.      Where it should NOT be used:    SQLBackupAndFTP is made to be simple. While for majority if users it is a huge advantage, the flip side is some specific configurations are not handled. You should not use SQLBackupAndFTP if:   * Your database has to be backed up several times a day (SQLBackupAndFTP does once a day only)   * If you need not only full, but differential backups as well (SQLBackupAndFTP does full only)   * If backups need to be encrypted (will be available soon)   * If you use an SFTP or any other irregular FTP server. (SQLBackupAndFTP has "FTP Test" button so it is very easy to see if it works.)   * If you use shared hosting (SQLBackupAndFTP has to be installed on the server) Author: Pranas.NET| Date: 06-10-2008 | Size: 515 KB
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	Equation Grapher  License: Freeware
	Equation grapher is an easy-to-use software for 2D function graphing. 2D function graphs can be plotted in Cartesian and polar coordinate systems .Equation grapher is an easy-to-use software for 2D function graphing. 2D function graphs can be plotted in Cartesian and polar coordinate systems .Equation grapher is an easy-to-use software for 2D function graphing. 2D function graphs can be plotted in Cartesian and polar coordinate systems .Equation grapher is an easy-to-use software for 2D function graphing. 2D function graphs can be plotted in Cartesian and polar coordinate systems Features:   Equation Grapher is a freeware   Graphing equations.   Cartesian coordinate system.   Ability to edit graphs interactively. You can move, zoom in and zoom out graphs.   Ability to save, print, cut, copy, paste and delete graphs. Author: GraphNow| Date: 16-09-2006 | Size: 1259 KB
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	25 RFID Case Studies Ebook  License: Freeware
	RFID technology may be hi-tech, but it is not rocket science. It does not take a PhD in Physics or Telecommunications to implement RFID technology applications to your own situation or business. All it takes is some knowledge about the RFID technology, to know precisely what it can do (strengths) and what it cannot do (weaknesses). Hence the idea of this Free Ebook, which you can easily download to your PC or laptop. This free Ebook is an RFID application storybook, which has twenty five different RFID technology application stories from around the globe. In this book you will find how ordinary people and businesses have started benefiting from RFID technology.Password 'abhisam' Each RFID technology application story is divided into different parts which give details about the history and background information about the particular RFID technology application, problems encountered , how an RFID technology based solution has solved the problem and the future scenarios and trends. This Ebook is designed to not only offer you an insight into how everyday people and businesses are using RFID technology to solve their real world problems, but also to provoke you into coming up with your own RFID application story. Instead of a regular printed book, we felt that an Ebook would be a better way, to convey information about a technology that is too fast for the world of printed books. You can study the RFID case studies and then apply RFID technology to YOUR own business or profession. If it you do it in an interesting way, do let us know, we will expand this book to also include your RFID application story. For those who prefer the printed word, please print out a copy and read it anywhere you like. There are no restrictions on printing at all. This Free Ebook does not have any complicated technical jargon, equations, diagrams, graphs or charts. There are also no illustrations. The book is designed to read more like a story book, which it is really. Author: Business Industrial Network| Date: 11-06-2007 | Size: 461 KB
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	Converber  License: Freeware
	Converber is a unit converter. It is a powerful software utility that will help make easy conversions between 911 various units of measure in 30 categories. Converber converts everything from length and force to flow and temperature. See some of the features listed below.  - Gives immediate access to all categories or single category  - Favorites menu to bookmark your frequently-used conversions  - New! Offset correction for meter value compensation  - Quickly search the unit list and immediately see results  - Step backwards or forwards through the most recently used conversions  - Single or multiple preference file(s) for different users  - Shows either common or ALL units  - Converts as you type, so no convert button is required  - Includes equation editor to add your own custom units  - Allows you to select/unselect the conversion file(s)  - Can change the number of significant digits of the output  - Option to select decimal-point precision  - Option to select scientific notation only  - Inverts selected units with the quick swap feature  - Displays the category to give further information  - Converts left-to-right OR right-to-left  - Runs stand-alone/portable using no dll files or registry settings  - Remembers last window position (if desired)  - Comes with extensive help file  - Supports transparency (Windows 2000, XP only)  - Supports a multi-language user interface    System Requirements  The program has been tested on Windows (98, NT, 2K, XP). Although it has not been verified, it will more than likely run on Windows 95 and ME, also. Converber requires approximately 185 kB of drive space, after installed (excluding 50 kB help file). This program is stand-alone with no external .dll files or registry entries required (If using setup executable, one registry key is added to the Uninstall directory used for the Add or Remove Programs control panel applet). This makes a perfect program to keep on your USB drive! Author: Xyntec Automation Inc.| Date: 3-31-2006 | Size: 185 KB
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	Electronics Mech Maths and Computing  License: Freeware
	Electronics - DC Current flow - Basic Electronics - Resistor Value Test - Simple DC Circuits - Types of Switching - Variable Voltages - Ohm's Law - DC Voltage - DC Current - Series/Parallel Resistors - AC Measurements - AC Voltage and Current - AC Theory - RCL Series Circuits - RCL Parallel Circuits - Capacitance - Capacitors - Inductance - Inductors - Impedance - Radio and Communication - Attenuators - Passive Filters - Active Filters - Oscillators - Circuit Theorems - Complex Numbers - Electrical - DC Power - AC Power - Silicon Controlled Rectifier - Power Supplies - Voltage Regulation - Magnetism - Transformers - Three Phase Systems - Energy Transfer and Cost - SemiConductors - Atomic Structures - Diode Theory - Diode Applications - Transistor Theory - Bipolar Transistor - Transistor Configurations - Active Transistor Circuits - Field Effect Transistors - Basic Operational Amplifier - Op-Amp Theory - Op-Amp Applications - Sum and Difference Amp - Testing - Analogue Multi-meter - Measurement -Mathematics - Number Systems - Number Conversion - Number Types - Roots - Angles and Parallels - Triangle Ratios - Triangle Angles - Percentages - Ratios - Fractions - Vectors - Circle Angles - Algebra Rules - Algebra - Mathematical Rules - Powers and Indices - Simplifying - Equations - Graphing - Slope and Translation - Curves and Angle Conversion - Personal Finance - Mechanics - Area - Surface Area and Symmetry - Volume - Compound Measures - Geometry - Motion - Optics -Computing and Logic - Hardware Devices - Data Structures - Data Files - Computer Systems - Data Handling - System Development - Computer Programming - Data Analysis - Binary Numbers - Binary Arithmetic - Digital Techniques - Logic Gates 1 - Logic Gates 2 - Logic Families - Flip Flops - Combinational Logic - Counters - Counting - Shift Registers - Logic Interfacing - 555 Timer - Boolean and DeMorgan's - Microprocessors - Micro-Computer - Data/Address Bus - A.L.U - Clock and Reset - Instructions and Control Author: eptsoft| Date: 01-01-2007 | Size: 6650 KB
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