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on 22 Oct 2021
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l=@linspace;
C=@cos;
S=@sin;
t=l(0,2*pi);
F=5*C(t);
G=8*S(t);
T=l(0,2*pi,10);
r=5*C(T);
s=8*S(T);
d = linspace(0,1,10) ;
X=r.*d' ;
Y=s.*d' ;
T=t(38:90);
x=-2+2*C(T);
y=2+2*S(T);
p=@plot;
P=@patch;
L='LineW';
hold on
P(F,G,'k')
p(X,Y,'w',X',Y','w')
P(x,y,'r',L,7)
P(-x,y,'r',L,7)
axis off equal
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