4-24-5

clc 
clear 
t = linspace(0,0.2,100);
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)
grid on