%---------------------------------------------------------------------------
% exa080901_dct1_test, for exa8.9.1
% to call function exa080901_dct1;
%---------------------------------------------------------------------------
clear

% 對一維信號作DCT；
for k=1:9
    k0=k-1;
    y=exa080901_dct1(200,k0);
    subplot(3,3,k)
    plot(y)
end