MATLAB in Physics - Matrices: wave1d.m - File Exchange

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Highlights from
MATLAB in Physics - Matrices

rrefexample(A) Copyright 2008-2009 The MathWorks, Inc.
rrefmovie(A,tol) RREFMOVIE Movie of the computation of the reduced row echelon form.
vectorExamples example to plot different types of vector data
largeLinearExample.m
lecture3_Matrices.m
lsfitexample.m
numerDiff.m
systemEq.m
wave1d.m
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from MATLAB in Physics - Matrices by Matt McDonnell
The third lecture in a series on using MATLAB® in undergraduate physics courses.

wave1d.m

N=100;
col=ones(N,1);
% make differentiation matrix
D=-spdiags([col,-2*col,col],(-1:1),N,N);
% solve eigenvalue problem
[F,V]=eigs(D,10,'sa');
% fix boundary points
F=[zeros(1,10);F;zeros(1,10)];
plot(F(:,1:4),'linewidth',3), grid on, axis tight
title('Standing waves')

%   Copyright 2008-2009 The MathWorks, Inc.
%   $Revision: 35 $  $Date: 2009-05-29 15:27:34 +0100 (Fri, 29 May 2009) $

Highlights from MATLAB in Physics - Matrices

Highlights from
MATLAB in Physics - Matrices