Oscilador de duffing forzado

1. José luis León Aguirre
Código Matlab
x(1)=0.3;
y(1)=0.1;
t(1)=0.1;
h=0.01;
for k=1:1000
t(k+1)=t(k)+h;
y(k+1)=y(k)+0.01*(-x(k)-(x(k).^3)+1.3*sin(0.6*t(k)));
x(k+1)=x(k)+y(k)*0.01;
end
plot(x,y)

2. Simulación en Matlab
x(1)=0.3;
y(1)=0.1;
t(1)=0.1;
h=0.01;
for k=1:1000
t(k+1)=t(k)+h;
y(k+1)=y(k)+0.01*(-x(k)-(x(k).^3)+1.3*sin(0.6*t(k)));
x(k+1)=x(k)+y(k)*0.01;
end
for i=1:1000

3. plot(x(1:i),y(1:i),'linewidth',1);
axis([-8 8 -8 8]);
hold on
pause(0.01);
end