System Of Non Linear Differentail Equations

Let us suppose a set of non-linear equations in the formF(m) = d(m,d are vectors, F is a vector function of vector argument). ANNI tries to construct suitable numerical approximation for inverse projection of d to m, i.e. to find numerical form ofG(d) = m.Such mapping may not exist in general,...

This customised function solves one type of non-linear systemof 3 simultaneous equations in 3 unknowns: k, L and r0 in 3 equations with 4 knowns: zeta, eeta, d and angle.function matrixresults = symsolvenonlineq(n,degrees,dinput)% EXAMPLE USAGE: m=symsolvenonlineq(3,45,20)% nb: takes around 738s...

This program calculates the roots of a system of non-linear equations in 2 variables. This a script file and you only have to write in the command windows ">>newton2v2", and the program ask for the functions and other elements that are necessary. What I mean "quotes" is single quotes,like this: '...


Platforms: Matlab

It is application of of Simulink Block to Cardiac PDE VI1 system of 2 non linear coupled equations of PDE and try to design solution with dicretized space and time and issue in 1D.I associate a Doc file to introduction theory.Just see this page simulink and not for run.I will next time develop...


Platforms: Matlab

This is a simple way of expressing non-linear scales (such as decibels) in python. In stead of:gain = 10 ** (12/10.)Use


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

solvesimul.m can be easily adapted to solve more equations but as it stands it will solve 2 unknowns in 2 equations (1 non-linear and one linear).To solve equations of this form... a*x + b*y = A (1) a1*x^2 + b1*y^2 = B (2)...with fsolve (used by solvesimul.m) you need to rewrite them so that they...


Platforms: Matlab

You can solve non-linear systems of 3 variables. Only write "newtonv1" on the command window. Then write the 3 equations, the number of iterations y the precision tolerance. The partial derivatives for the gradients are calculated by the program


Platforms: Matlab

The non-linear regression problem (univariate or multivariate) is easily posed using a graphical user interface (GUI) that solves the problem using one of the following solvers: - nlinfit: only univariate problems. - lsqnonlin: can deal with multivariate problems (more than one dependent fitting...


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

Simple Zero Phase Distortion Multiplier-less Gaussian Low-Pass & High-Pass Digital Filter of a Linear Chirp.


Platforms: Matlab

Project:1D signal:Identification of PieceWise Linear by multiple regressionDetection of homogeneous zone using entropieProjection in the Hough space (1D) I/OInputs: 1D signal (xe,ye)Simulated data (Figure 12);Outputs: Entropie signal (xee,yee)Line positions, positionLine lengths, longueurLine...


Platforms: Matlab

RM2SF changes the typeface of non-math text with latex interpreter from roman (serif) to sans-serif. This is needed because the latex interpreter typesets both math and text in roman irrespective of the font specification. Therefore RM2SF places each non-math part of the text inside textsf{}....


Platforms: Matlab

-Compatible with pre-2010 vers. of Matlab and Neural network toolbox-Trains a perceptron for the spring and one for the damper. -Runs a simulation with forcing function and noise.-If you don't have the toolbox, you can still use my back-propagation.


Platforms: Matlab

PySUNDIALS was designed as a Python package that is supposed to provide Python bindings for SUNDIALS (SUite of Non-linear DIfferential/ALgebraic Solvers). While python bindings for SUNDIALS will hopefully be generally useful in the computational scientific community, they are being developed...


Platforms: Windows

This is a nonlinear system of differential and algebriac equations, that describe the dynamics of a continuous bioreactor. The bioreactor simulates the production of ethanol through yeast fermentation. The model is described in:Z. K. Nagy, Model Based Control of a Fermentation Bioreactor using...


Platforms: Matlab

This is a MATLAB-implementation of ROCK4 (Abdulle & Medovikov)for the numerical solution of a (mildly) stiff system of first order differential equations ODEs y'=f(t,y).ROCK4 is based on a family of second order explicit Runge-Kutta methods with nearly optimal stability domain on the negative...


Platforms: Matlab

Comparision of simple linear regression equations without data. As well as the before file arsos.m this procedure is suffice to test the homogeneity of k regression coefficients (Ho: b1 = b2 =...= bk). It do not needs to input data, but the sample statistics as sample size, regression...


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

Solvit (Advanced Solver of System of Equations - Linear/Nonlinear) by Bhathiya Jayasekara 5 Average: 5 (1 vote) Nonlinear equation solver (Solvit) This is a free OpenOffice.org addon to solve system of equations. There are 4 main parts(plus plotter) in this addon. 1)Linear Equation Solver of 2...


Platforms: Mac

This zip file contains three separate guis. One solves and plots a system of functions given the inputs of 2 or more functions. The second one solves a 2 system differential equation model using the 4th order runga-kutta method. The third one is just a demo gui of how my components work for my...


Platforms: Matlab