Differential Equations

1-D CovolutionIn mathematics and, in particular, functional analysis,convolution is a mathematical operation on two functions f and g, producing a third functionthat is typically viewed as a modified version of one of the original functions, giving the area overlap between the two functions as a...

The libMesh library provides a framework for the numerical simulation of partial differential equations using arbitrary unstructured discretizations on serial and parallel platforms. libMesh currently supports 1D, 2D, and 3D steady and transient finite element simulations. The library makes use...

The Circular Well model displays the 2D energy eigenstates of a particle trapped in a very deep two-dimensional circular well. Because the Schr?*A*dinger equation for this system is separable into radial and angular differential equations, the solution can be expressed as a product of a Bessel...


Platforms: Mac

GPAnalyser is a tool for fluid analysis of massively parallel systems. The core of GPA is based on the paper by Hayden et. al. showing how to derive systems of ordinary differential equations approximating moments of populations in models described in the Markovian process algebra PEPA. GPA...


Platforms: Mac

FuncDesigner is a computer algebra system (CAS) written in Python + NumPy as an ordinary Python module (thus making it free to combine with any other Python or Python-connected code). That makes it cross-platform (Linux, Windows, Mac OS X etc), with completely free license: BSD. It can be used...


Platforms: *nix

This script allows you to run a linear equations solver using eval and built-in complex numbers.One could add one more line to insert '*' where needed, i.e. "100x" -> "100*x", add some input validation, in particular check whether the equation is actually linear and not quadratic or cubic, and...


Platforms: Windows, Mac, *nix, Python, BSD Solaris

Basic Differential Encoding/Decoding of input vector of numeric valuesdiffencodeve.m : Differential Encoding functiondiffdecodevec.m : Differential Decoding functiondiffencodevecTest.m : Test Program for Differential Encoding/Decoding.


Platforms: Matlab

Lagrange is a function that calculate equations of motion (Lagrange's equations) d/dt(dL/d(dq))- dL/dq=0. It Uses the Lagrangian that is a function that summarizes thedynamics of the system. Symbolic Math Toolbox is required.


Platforms: Matlab

A differential equation can be solved by several methods. I have presented the simulink method to solve the differential equ. The que is showed in the screenshot.Queries and Comments are dearly invited.


Platforms: Matlab

This code evaluates the root of transcendental equation with the help of Newton Raphson method with enhanced features like vanishing of differential of a function, Infinite cycling for root due to a poor initial approximation or when a root exists but differential does not.Use of symbolic Toolbox...


Platforms: Matlab

[D]=Diff_Quad(N);Differential Quadrature Matrix for 1st derivative based on Lobatto grid.It calculates for N grid points.Higher derivatives can be easily calculated by using D matrix.


Platforms: Matlab

The MATLAB package Chebpack solves specific problems for differential or integral equations. It is organized in four modules, corresponding to four levels of complexity. Each level has an associated set of particular examples. The package is based on the Chebyshev tau spectral method applied in...


Platforms: Matlab

Simple program that makes it faster and easier to solve simultaneous equations using the solve command.


Platforms: Matlab

this is a simple GUI program to plot a beautiful graphs from mathematical equations


Platforms: Matlab

Unique interactive multimedia Chemistry teaching software that tests students as they learn. Topics covered include: elements, atoms and molecules, word equations, chemical symbols, Periodic Table and chemical formulas. Plus interactive simulations to teach the balancing of chemical equations and...


Platforms: Windows

MathWriter is a stand-alone program that allows for the production of, Mathematical, Scientific and Engineering equations and formulae.Schoolteachers and Lecturers will find MathWriter useful for producing notes, reports and test papers. The program is designed so that an expression may be...


Platforms: Windows, Windows CE

Numerically solves systems of simultaneous nonlinear equations. It can fully explore defined intervals to search for multiple solutions or quickly find solutions starting with random seeds. You may predefine constants and specify the error bound for the results. Handles a wide variety of...


Platforms: Windows

X2 - Equations calculates the real roots of rational second grade equations, showing the results with fractions (Yeah!) It also gives geometric info related to the parabola.


Platforms: Windows

The APMonitor Modeling Language is optimization software for differential and algebraic equations. It is coupled with large-scale nonlinear programming solvers for data reconciliation, real-time optimization, dynamic simulation, and nonlinear predictive control. It is available as a free web...


Platforms: Windows

IO Software Equations is the advanced equations editor which combines the power of features with use simplicity. Supporting over 700 symbols with more than a thousand possible combinations, an equation library, real time visual and LaTex editing, using its own scientific fonts, a fully...


Platforms: Windows