# Software Listing: Nonlinear Equations

**Systems of Nonlinear Equations**- License: Shareware

System of Nonlinear Equations 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 functions, including trigonometric and hyperbolic functions. Results can be saved or printed. Includes a help file with instructions, example and methodology.. Numerical Mathematics.. Free Numerical Mathematics software downloads.

**Publisher:**Numerical Mathematics**Date:**06-09-2009**Size:**1 KB

**Platform:**Win2000, WinOther

**PPT slide for Chapter 4 (Nonlinear Equations) of "Applied Numerical Methods Using MATLAB"**- License: Shareware

Chapter 4 Nonlinear Equations 4.1 Iterative Method toward Fixed Point 4.2 Bisection Method 4.3 False Position OR Regula Falsi Method 4.4 Newton(-Raphson) Method 4.5 Secant Method 4.6 Newton Method for a System of Nonlinear Equations 4.7 Symbolic Solution for Equations 4.8 A Real-World Problem.

**Publisher:**Won Yang**Date:**10-02-2013**Size:**451 KB

**Platform:**Matlab, Scripts

**LMFsolve.m: Levenberg-Marquardt-Fletcher algorithm for nonlinear least squares problems**- License: Freeware
- Price: 0.00

The function LMFsolve.m serves for finding optimal solution of an overdetermined system of nonlinear equations in the least-squares sense. The standard Levenberg- Marquardt algorithm was modified by Fletcher and coded in FORTRAN many years ago. LMFsolve is its essentially shortened version implemented in MATLAB and complemented by setting iteration parameters as options. This part of the code has been strongly influenced by Duane Hanselman's function mmfsolve.m. Next to it, a finite difference approximation of Jacobian matrix is appended to it as a nested subfunction as well as a function for dispaying of intermediate results.

**Publisher:**Miroslav Balda**Date:**01-02-2013**Size:**10 KB

**Platform:**Matlab, Scripts

**LMFnlsq - Solution of nonlinear least squares**- License: Freeware
- Price: 0.00

The function The LMFnlsq.m serves for finding optimal solution of an overdetermined system of nonlinear equations in the least-squares sense. The standard Levenberg- Marquardt algorithm was modified by Fletcher and coded in FORTRAN many years ago (see the Reference). This version of LMFnlsq is its complete MATLAB implementation complemented by setting parameters of iterations as options. This part of the code has been strongly influenced by Duane Hanselman's function mmfsolve.m. Calling of the function is rather simple and is one of the following: LMFnlsq % for help output x = LMFnlsq(Eqns,X0); x = LMFnlsq(Eqns,X0); x = LMFnlsq(Eqns,X0); x = LMFnlsq(Eqns,X0,'Name',Value,.

**Publisher:**Miroslav Balda**Date:**05-06-2013**Size:**870 KB

**Platform:**Matlab, Scripts

**Newton's method done right**- License: Shareware

Newton's method for solving a system of nonlinear equations, see http://en.wikipedia.org/wiki/Newton's_method Newton(X,F,X0) solves nonlinear system F(x)=0 by Newton's method, using the given initial approximation X0. The derivative (Jacobian) is evaluated symbolically. The iterations are performed numerically..

**Publisher:**Andrew Knyazev**Date:**06-04-2013**Size:**1024 KB

**Platform:**Matlab, Scripts

**Kalkulator**- License: Shareware
- Price: 40

The most powerful Sci/Eng calculator for Windows. Expression evaluation, 18 digits of precision, variables, >100 functions, unit conversion, polynomial roots, interpolation, polynomial regression, linear algebra, numerical integration and differentiation, systems of linear, non-linear and differential equations, multi-argument functon optimization and fitting, curve, point and histogram graphs, statistical operations, computer math (bin/oct/hex)..

**Publisher:**J. Andrzej Wrotniak**Date:**13-12-2002**Size:**1187 KB

**Platform:**WinOther

**Nonlinear least square optimization through parameter estimation using the Unscented Kalman Filter**- License: Freeware
- Price: 0.00

The Kalman filter can be interpreted as a feedback approach to minimize the least equare error. It can be applied to solve a nonlinear least square optimization problem. This function provides a way using the unscented Kalman filter to solve nonlinear least square optimization problems. Three examples are included: a general optimization problem, a problem to solve a set of nonlinear equations represented by a neural network model and a neural network training problem. This function needs the unscented Kalman filter function, which can be download from the following link: http://www.mathworks.

**Publisher:**Yi Cao**Date:**11-05-2013**Size:**10 KB

**Platform:**Matlab, Scripts

**smartnonlinrgen**- License: Shareware

derives number of dimensions ( variables ) of given set of function ( class - inline , symbolic or char ) then finds the roots of a set ( nonlinear equations ) Example: F = inline ( '[ ( x ^ 2 ) + ( x * y ) - 10 ; y + ( 3 * ( x * ( y ^ 2 ) ) ) - 57 ]' ) ; smartnonlinrgen ( F ,[ 1 ; 1 ] , [ 2 ; 2 ] , 100 ) ans = 2.0000 3.0000.

**Publisher:**Ali Mohammad Razeghi**Date:**24-03-2013**Size:**10 KB

**Platform:**Matlab, Scripts

**ndCurveMaster for mac OS**- License: Shareware
- Price: 49

ndCurveMaster was designed to find optimum equations to describe empirical data using a regression method. ndCurveMaster is the first and only program to find the ideal equation to allows the auto fitting of an unlimited number of input variables, for example: y= a0 + a1*x1^(-11) + a2*x3 + a3*x5^3 + a4*[ln(x8)]^3 + a5*[exp(x1*x4)]^(-2) + a6*x1*x8^2 + a7*ln(x2*x6) + a8*x2*x3*x4. ndCurveMaster uses heuristic techniques for curve fitting. The software is designed with the purpose of generating high quality results and output while saving your time in the process. ndCurveMaster compares very favourably to the competition and does so at a lower price.

**Publisher:**TCScienceSof**Date:**24-04-2017**Size:**3573 KB

**Platform:**Mac OS X

**Unconstrained Optimization using the Extended Kalman Filter**- License: Freeware
- Price: 0.00

The Kalman filter is actually a feedback approach to minimize the estimation error in terms of sum of square. This approach can be applied to general nonlinear optimization. This function shows a way using the extended Kalman filter to solve some unconstrained nonlinear optimization problems. Two examples are included: a general optimization problem and a problem to solve a set of nonlinear equations represented by a neural network model. This function needs the extended Kalman filter function, which can be download from the following link: http://www.mathworks.com/matlabcentral/fil...objectType=FILE.

**Publisher:**Yi Cao**Date:**21-01-2013**Size:**10 KB

**Platform:**Matlab, Scripts

**Power System Analysis**- License: Shareware
- Price: 1

This unique application is for all students across the world. It covers 188 topics of Power system Analysis in detail. These 188 topics are divided in 5 units.

Each topic is around 600 words and is complete with diagrams, equations and other forms of graphical representations along with simple text explaining the concept in detail.

This USP of this application is "ultra-portability". Students can access the content on-the-go from anywhere they like.

Basically, each topic is like a detailed flash card and will make the lives of students simpler and easier.

Some of topics Covered in this application are:

1.

**Publisher:**faadooengineers.com**Date:**22-05-2014**Size:**2150 KB

**Platform:**Android 2.x, Android 3.x, Android 4.4, Android 4.x

**UltimaCalc Pro**- License: Shareware
- Price: 39.45

UltimaCalc Pro is an algebraic graphing calculator that is easy to use and can occupy only a little space on your screen, so you can keep it open and ready for use at all times, even on top of other windows. The main window allows calculations to be expressed in mathematical form, in other words as expressions entered in plain text. You can edit what you typed and repeat the calculation. UltimaCalc Pro has a large range of functions built in, including a function for evaluating definite integrals, and you can define your own functions too. What's more, it includes the Symbolic Algebra module.

**Publisher:**Iconico, Inc.**Date:**23-09-2012**Size:**3277 KB

**Platform:**WinOther

**Octave**- License: Freeware
- Price: 0.00

GNU Octave is a high-level language, primarily intended for numerical computations. It provides a convenient command line interface for solving linear and nonlinear problems numerically, and for performing other numerical experiments using a language that is mostly compatible with Matlab. It may also be used as a batch-oriented language. Octave has extensive tools for solving common numerical linear algebra problems, finding the roots of nonlinear equations, integrating ordinary functions, manipulating polynomials, and integrating ordinary differential and differential-algebraic equations. It is easily extensible and customizable via user-defined functions written in Octave's own language, or using dynamically loaded modules written in C++, C, Fortran, or other languages.

**Publisher:**John W. Eaton**Date:**04-05-2012**Size:**71680 KB

**Platform:**WinOther

**Optimization Tips and Tricks**- License: Freeware
- Price: 0.00

New users and old of optimization in MATLAB will find useful tips and tricks in this document, as well as examples one can use as templates for their own problems. Use this tool by editing the file optimtips.m, then execute blocks of code in cell mode from the editor, or best, publish the file to HTML. Copy and paste also works of course. Some readers may find this tool valuable if only for the function pleas - a partitioned least squares solver based on lsqnonlin. This is a work in progress, as I fully expect to add new topics as I think of them or as suggestions are made. Suggestions for topics I've missed are welcome, as are corrections of my probable numerous errors.

**Publisher:**John D'Errico**Date:**10-02-2013**Size:**92 KB

**Platform:**Matlab, Scripts

**Iterative Methods for Linear and Nonlinear Equations**- License: Shareware

This book provides a complete analysis of the conjugate gradient and generalized minimum residual iterations. For a full book description and ordering information, please refer to http://www.mathworks.com/support/books/book1344.jsp..

**Publisher:**C.T. Kelley**Date:**22-06-2013**Size:**20 KB

**Platform:**Matlab, Scripts

**OpenRTDynamics**- License: Freeware
- Price: 0.00

The Real Time Dynamics Toolbox is a noval approach to the implementation of block / signal based schematics, commonly used in control engineering and signal processing, for realtime usage (like Real-Time WorkshopAÂ® or Scicos Code Generation). It is suitable to create time discrete implementations, like one would do in Scicos or Simulink, within Scilab-scripts (Matlab like) by using the toolbox functions. This enables the programmer to create well structured code which integrates design and implementation in one place and also enables functional and object orientated design schemes. The latter makes it possible to reuse parametrised functionality that may also change in its structure based on parametrisation.

**Publisher:**Openrtdynamics**Date:****Size:**1327 KB

**Platform:**Linux

**LiScNLS**- License: Shareware

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

**Publisher:**Damian Trif**Date:**02-03-2013**Size:**205 KB

**Platform:**Matlab, Scripts

**Ordinary Differential Equations**- License: Shareware
- Price: $15.00

Solves boundary-value or initial-value problems involving nonlinear or linear ordinary differential equations of any order, or systems of such. The conditions may also be linear or nonlinear. The solution will be a finite power or trigonometric series. You have one-click control of the graph with zooming, panning, centering, etc. The solution may be studied by the POWER & TRIG SERIES program to find roots, extrema, derivatives, integral, graph.. Numerical Mathematics.. Free Numerical Mathematics software downloads.

**Publisher:**Orlando Mansur**Date:**27-07-2009**Size:**2355 KB

**Platform:**Win2000, WinOther

**EASY-FIT ModelDesign**- License: Demo

The system solves constrained nonlinear parameter estimation (nonlinear regression, data, curve and surface fitting) problems based on ODEs, DAEs, PDEs, PDAEs, steady-state systems, Laplace equations, and analytical functions. A statistical analysis provides confidence intervals, correlation and covariance matrix, identification of significant parameters, and allows optimum experimental design. Model equations are defined in a modeling language called PCOMP and are interpreted and evaluated during runtime. General: Arbitrary fitting criteria depending on the solution of a dynamical system, e.

**Publisher:**Klaus Schittkowski**Date:**03-02-2009

**Platform:**WinOther, WinVista

**FlexPDE Student**- License: Freeware
- Price: 0.00

ALL-IN-ONE MULTI-PHYSICS FINITE ELEMENT MODELING

Ever wish there was a flexible system for solving all the partial differential

equation problems that come up in science and engineering, so you didn't have

to buy and learn a new software tool for each problem?

Well, now your wish has come true. FlexPDE is a scripted finite element

partial differential equations problem solving environment.

FlexPDE reads your partial differential equation system and problem domain

definition in a natural, easy to learn language, then constructs a finite

element mesh, solves the problem, and presents graphical output of the solution.

**Publisher:**PDE Solutions Inc**Date:**26-02-2011**Size:**9450 KB

**Platform:**Linux, Mac OS X, Windows Server, Windows Vista, WinOther