five.asv

matlab的一些基础程序

switch cho
    case 0
        clf;break 
    case 1    
      figure;break
end
% l5=figure;
n=[0:50];
x=cos(0.04*pi*n) + 0.2*randn(size(n));
stem(n,x);title('Sequence in Example 3.1c');
xlabel('n'); ylabel('x(n)');axis([0,50,-1.4,1.4]);