c84.m

来自「matlab例程MATLAB 6.x版的内建数据类型（Built-in data」· M 代码 · 共 6 行

k=-15:15; k=k';
fk1=cos(3*pi*k/7);
fk2=cos(11*pi*k/7);
stem(k,fk1,'x'),hold on,
stem(k,fk2),hold off