Unknowns

Software for teaching and learning of linear equations with two unknowns. Solutions by the elimination and substitution methods. Worked examples of solutions with each method shown side by side for comparison. Can generate hundreds of sums for practice. Users may also provide their own equations.... Platforms: Windows

Strasheela is a highly expressive constraint-based music composition system.2 The Strasheela user declaratively states a music theory and the computer generates music which complies with this theory. A theory is formulated as a constraint satisfaction problem (CSP) by a set of rules (constraints)... Platforms: Mac

Mathematics Tools is a tools that help people in solving Mathematical problems such as: - Solving quadratic equation and cubic equation - Solving System of equations (2 or 3 unknowns) - Working in the Base Number System - Practice: Calculate the value of PI using the Probability - Explore the... Platforms: Windows

FMINLBFGS is a Memory efficient optimizer for problems such as image registration with large amounts of unknowns, and cpu-expensive gradients.Supported:- Quasi Newton Broydend-deOCtFletcherd-deOCtGoldfarbd-deOCtShanno (BFGS).- Limited memory BFGS (L-BFGS).- Steepest Gradient Descent... Platforms: Matlab

It estimates the Newton Raphson optimization procedure for (m) unknowns of (n) non-linear equations. In case no Jacobian vector is presented, then the initial Jacobian vector is estimated by Broyden Method (multivariate secant approach) and it is then updated using the Sherman Morrison... Platforms: Matlab

Using an engine throttle valve modeling example, this demo shares some perspectives on creation of nonlinear models of dynamic systems from the measurements of its input and outputs. It describes useful workflows for approaching the task of data-based modeling using System Identification... Platforms: Matlab

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... Platforms: Matlab

Numerical Mathematical Utilities offer powerful, specialized, mathematical capabilities, they are for immediate online use, and since they run within a web browser, they work on all the operating systems. Among the tools offered are utilities for solving the Quadratic, Cubic, and Quartic... Platforms: Any Browser+Javascript

Geo::Spline is a Perl module to calculate geographic locations between GPS fixes. SYNOPSIS use Geo::Spline; my $p0={time=>1160449100.67, #seconds lat=>39.197807, #degrees lon=>-77.263510, #degrees speed=>31.124, #m/s heading=>144.8300}; #degrees clockwise from North my... Platforms: *nix

Statistics::GaussHelmert is a general weighted least squares estimation module. SYNOPSIS use Statistics::GaussHelmert; # create an empty model my $estimation = new Statistics::GaussHelmert; # setup the model given observations $y, covariance matrices # $Sigma_yy, an initial guess $b0... Platforms: *nix

Math Asst., Calculator, and Hypertext Notepad for Scientists and Engineers using Pocket PC 2003. Assists with calculating networks of formulae, dynamic simulation, differential and linear equation solution, multiple equations and unknowns, builtin script language. Useful for engineering and... Platforms: Windows

Math Assistant and Hypertext Notepad for Engineers and Scientists using Windows. Assists with calculating networks of formulae, dynamic simulations, equation solutions, differential, multiple equations and unknowns, with built-in script language. Useful for engineering and scientific... Platforms: Windows

16 free online financial calculators using the latest AJAX technologies so that the screen does not redraw when the user clicks on calculate. Includes a very full featured amortization schedule as well as an interest and several loan calculators. These are the 16 calculators included: Accelerated... Platforms: Other

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

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

Usage: Newton(@funfcn,X0[,Options[,Params]); funfcn is a function script with the following interface: function F = function(X) % ... or a string containing the code as shown below, were F is the vector of the functions, and X the vector of the unknowns which must have the same length. A guess... 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