% plot2.m 96/07/14
%
% Program to plot circle of radius 4 in xy-plane
% 
    zi=sqrt(-1);
    z=4*exp(zi*(0:1:100)/100*2*pi);
    plot(z,'-');
    axis([-5 5 -5 5]);
    axis square;
    hold on;
    plot([0 0],[-5 5],'w-');
    plot([-5 5],[0 0],'w-');
    xlabel('x');
    ylabel('y');
    text(-2.4,2.4,'R');
    text(1,4.2,'x^2+y^2=16');
    hold off;
