dm07205.m

来自「the code of the book come form the book 」· M 代码 · 共 10 行

%dm07205
%观察离散正弦序列的周期性
n=0:40;
subplot(2,1,1)
stem(n,cos(n*pi/6),'filled')
title('cos(n*pi/6)')
subplot(2,1,2)
stem(n,cos(4*n),'filled')
title('cos(4*n)')