t = -1:0.01:0; %we sample our t from -1 to 0 with step = 0.01
xCircle = t; %our arc of the circle will begin in (-1, 0)
yCircle = sqrt(1-t.^2); %notice the '.' (dot) before ^ (to the power of).
%as t is an array/vector, we use dot to tell matlab the operation should be
%done _per_ element, not on a vector as a whole.


p1 = plot(xCircle,yCircle);
set(p1, 'color','red');

hold on
axis equal

xBezier = 0.2*(1-t).*cos(12*t)-0.5; %here you should write your own bezier equation
yBezier = 0.2*(1-t).*sin(12*t)+0.5; %here you should write your own bezier equation
p2 = plot(xBezier,yBezier);
set(p2, 'color', 'blue');
hold off