Many students ask me how do I do this or that in MATLAB. So I thought why not have a small series of my next few blogs do that. In this blog, I show you how to solve simultaneous linear equations given in matrix form.

- The MATLAB program link is here.
- The HTML version of the MATLAB program is here.
**DO NOT COPY AND PASTE THE PROGRAM BELOW BECAUSE THE SINGLE QUOTES DO NOT TRANSLATE TO THE CORRECT SINGLE QUOTES IN MATLAB EDITOR.****DOWNLOAD THE MATLAB PROGRAM****INSTEAD**

%% HOW DO I DO THAT IN MATLAB SERIES?

% In this series, I am answering questions that students have asked

% me about MATLAB. Most of the questions relate to a mathematical

% procedure.

%% TOPIC

% How do I solve a set of simultaneous linear equations?

%% SUMMARY

% Language : Matlab 2008a;

% Authors : Autar Kaw;

% Mfile available at

% http://numericalmethods.eng.usf.edu/blog/sle.m;

% Last Revised : August 12, 2009;

% Abstract: This program shows you how to solve a set of simultaneous linear

% equations?

% .

clc

clear all

clf

%% INTRODUCTION

disp(‘ABSTRACT’)

disp(‘ This program shows you how to solve a’)

disp(‘ set of simultaneous linear equations’)

disp(‘ ‘)

disp(‘AUTHOR’)

disp(‘ Autar K Kaw of https://autarkaw.wordpress.com’)

disp(‘ ‘)

disp(‘MFILE SOURCE’)

disp(‘ http://numericalmethods.eng.usf.edu/blog/sle.m’)

disp(‘ ‘)

disp(‘LAST REVISED’)

disp(‘ August 12, 2009’)

disp(‘ ‘)

%% INPUTS

% Enter the coefficient matrix of the equation [A][X]=[C]

A=[12 23 39; 13 17 19; 21 23 29];

% Enter the right hand side vector

C=[29; 37; 59];

%% DISPLAYING INPUTS

disp(‘ ‘)

disp(‘INPUTS’)

disp(‘________________________’)

disp(‘Coefficient Matrix’)

disp(‘________________________’)

dataval=[A];

disp(dataval)

disp(‘________________________’)

disp(‘Right hand side vector’)

disp(‘________________________’)

dataval=[C];

disp(dataval)

disp(‘________________________’)

%% THE CODE

% The solution

X=A\C;

%% DISPLAYING OUTPUTS

disp(‘ ‘)

disp(‘OUTPUTS’)

disp(‘________________________’)

disp(‘Solution Vector’)

disp(‘________________________’)

dataval=[X];

disp(dataval)

disp(‘________________________’)

his post is brought to you by Holistic Numerical Methods: Numerical Methods for the STEM undergraduate at http://numericalmethods.eng.usf.edu, the textbook on Numerical Methods with Applications available from the lulu storefront, and the YouTube video lectures available at http://numericalmethods.eng.usf.edu/videos and http://www.youtube.com/numericalmethodsguy

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