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Math1280: Computer Assignment III
Phase-plane analysis of 2D systems of nonlinear ODEs
Pplane6
PPLANE is Matlab subroutine with GUI, written by John C. Polking, Department of Mathematics,
Rice University, that allows one to visualize nullclines and dire
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Math 1280: Computer Assignment II
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Bifurcation diagrams
When looking for bifurcation diagram of x f ( x, r ) , one option is use the tools covered in the
last Computer Assignment: Pick a value of r, plot function f ( x, r ) , find fixed points, plot the
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Math 1280: Computer Assignment I
Introduction
This lab is designed to show you how to use Matlab to analyze first-order nonlinear differential
equations. Before coming to the lab try to get some acquaintance with Matlab programming
environment, for exam
function flow(fun,xlims,scale)
Nx = 20;
[xx,yy] = meshgrid(xlims(1):(xlims(2)-xlims(1)/Nx:xlims(2), 0);
N = length(xx);
px = zeros(1,N);
py = zeros(1,N);
for k = 1:N
px(k) = feval(fun,xx(k);
end
if nargin <= 2
scale = 0.3;
end
quiver(xx,yy,px,py,scale)
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