x_y_jiao_space.m

一个小小的c语言编程

function x_y_jiao_space
global X1 X2 X3 r sigma
L3=X3>r-1+(sigma+1)^2/(4*sigma);%焦点
c1=L3.*X1;c2=L3.*X2;
figure(8),h2=title('焦点');
plot(c1,c2,'.')