clc
clear

t=linspace(0, 0.2, 1000);

x=(0.5+5*t).*sin((2*pi/3)*t).*cos(4*pi*t);
y=(0.5+5*t).*sin((2*pi/3)*t).*sin(4*pi*t);
z=(0.5+5*t).*cos((2*pi/3)*t);

plot(x, y, z, 'b', 'LineWidth',2)
grid on
xlabel('x')
ylabel('y')
zlabel('z')

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