The ezplot command will also handle parametric equations. Try ezplot ('cos(t)', 'sin(t)' , [0,2*pi]) to get a feel for how the command works. In Exercise, use the ezplot command to plot the parametric equations over the indicated time interval.
x = cos(t/2) + 2 sin(t/2), y(t) = sin(t/2), [0, 4π]
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