h-plane 을 matlab code어디가 잘못되었는지 모르겠네요

[matlalala]

theta=0:.01:2*pi;
a11=sin(theta);
a1=sin(2*pi*a11);
b1=2*pi*sin(theta);
c1=1+cos(theta);
E=(c1*a1)/(b1);
%plot(theta,E);
polar(theta,abs(E));


Error in ==> Untitled4 at 6
E=(c1*a1)/(b1);

계속 에러네요.. 뭐가 잘못된거죠

 

[Spops]

theta=0:.01:2*pi; a11=sin(theta); a1=sin(2*pi*a11); b1=2*pi*sin(theta); c1=1+cos(theta); E=(c1*a1)/(b1); %plot(theta,E); polar(theta,abs(E)); Error in ==> Untitled4 at 6 E=(c1*a1)/(b1); ?? ????.. ?? ?????  

At all I do not know, as to tell...