Difference Equations

First-order-degree linear differential and non-homogeneous equation's solution possible the unknown integration multipler technique. Also, this simple technique's depend both sides of original homogeneous differential equation. The solution is slightly and more complicated if this integration...

Demo to perform very, very simple color detection in LAB color space. The RGB image is converted to LAB color space and then the user draws some freehand-drawn irregularly shaped region to identify a color. The Delta E (the color difference in LAB color space) is then calculated for every pixel...

Two mass variable equations with "Aerospace 3Dof Simple Variable Mass Blockset" are compared in a 1Dof frictionless environment. Initial conditions are given in Model Callbacks.Results showed that "Aerospace 3Dof Simple Variable Mass Blockset" uses the incorrect equation.


Platforms: Matlab

Set difference of two sets of positive integers (much faster than built-in setdiff) which is great if you have to call it million times in a loop.


Platforms: Matlab

LYAPACK is a MATLAB toolbox for the solution of certain large scale problems in control theory, which are closely related to Lyapunov equations. In contrast to the 'lyap' and 'dlyap' command in the MATLAB Control toolbox it uses iterative algorithms and is intended for large, sparse problems.


Platforms: Matlab

These files are associated with the free undergraduate level textbook: 'Introductory Finite Difference Methods for PDEs' which may be downloaded from a link on my homepage which also contains worked solutions, case studies and audio visual material. To find my homepage just search for 'clive...


Platforms: Matlab

The function nonlinearBVP_FDM .m is an implementation of thenonlinear finite difference method for the general nonlinearboundary-value problem --------------------------------------------- y''=f(x,y,y'), for a> Y = nonlinearBVP_FDM(1,3,17,43/3);Note that Y(:,1) represents x and Y(:,2) is vector...


Platforms: Matlab

Simulink is used for as GUI and matlab solves resulting equations. Requires SimPowerSystems!


Platforms: Matlab

symsolvesimulv2.m can be easily adapted to solve more equations but as it stands it will solve 2 unknowns in 2 non-linear equations (can be linear too or a mixture).Big change: It now has data input integrity checking.At the MATLAB command-line prompt you run the 'symsolvesimulv2' m-file function...


Platforms: Matlab

This program timesteps the Shallow Water Equations in a curved basin of variable depth. The central timestep finite difference method is used to linearly approximate the differentials.*I'm a student, so ideas for improvement and criticisms would be awesome.


Platforms: Matlab

Simple program that shows how much difference it makes to optimize your code using the profiler tool.However, transfering the code from this M file into an GUI shows that the fasted algorithm (3) runs 10 slower than algorithm (4).


Platforms: Matlab

AbstractStochastic timing machinery (STM) is a diagram-oriented parallel programming language. Examples in electrical engineering, chemistry, game theory, and physics lead to associated ordinary and stochastic differential and partial differential equations. We od¬TCdeer an abstract...


Platforms: Matlab

LiScNLS is a MATLAB package for the numerical study of some nonlinear differential equations of the form Lu=Nu using the Lyapunov-Schmidt method.


Platforms: Matlab

When a give system of linear equations are converted to vector form it can easily be written matrix form.


Platforms: Matlab

Given 2 sinusoidal signals of the same frequency, the function gives the "phase difference" between the 2 given signals The phase difference is in RADIANS!!!!!! The output is limited to pd={-pi,pi}radians Time Stamp: 2010 October 19 2043hrs


Platforms: Matlab

Chapter 4 Nonlinear Equations4.1 Iterative Method toward Fixed Point4.2 Bisection Method4.3 False Position OR Regula Falsi Method4.4 Newton(-Raphson) Method4.5 Secant Method4.6 Newton Method for a System of Nonlinear Equations4.7 Symbolic Solution for Equations4.8 A Real-World Problem


Platforms: Matlab

Displaying the system of differential equations for the spatial model of the car and shows you how to make using the software MATLAB / Simulink.


Platforms: Matlab

For those of us who like to provide our own partial derivative sensitivity matrix. Can be used for both linear and non-linear systems.x = nrsolve( F, dFdx, xi, tol, max_iter, c1, c2.... )Given a system of equations F = {F1;F2;...}, defined sensitivity matrix dFdx (matlab functions allowed), and...


Platforms: Matlab

lineq is the main program, help message for lineqfunction [homsol,spsol]=lineq(a,b)% solve linear equations a*x=b;% [homsol,spsol]=lineq(a,b);% lineq(a).where homsol are solutions of corresponing homogenous equation,spsol is the special solution of a*x=b.


Platforms: Matlab

simequation(a,b)a must be a n x n matrix of coefficients andb must be a n x 1 matrix of constantsExample usage to solve this system of 2 simultaneous linear equations in 2 unknowns:2x + 4x = 3 and3x + 5x = 6%coefficient matrix..>> cm = [ 2 , 4; 3, 5]cm = 2 4 3 5>>%..calling the function to solve...


Platforms: Matlab