y_z_jiao_space2.m

来自「一个小小的c语言编程」· M 代码 · 共 6 行

function y_z_jiao_space2
global X1 X2 X3 b
L2=X2>(b-1)/2;%焦点
b1=L2.*X2;b2=L2.*X3;
figure(10),h3=title('焦点');
plot(b1,b2,'.')