이라 하자.

a) 분해하고 x(n)의  성분을 그려라.

ex5_10.cem

/*   Chapter 5: Example 5.10   Circular shift example
*/
 
subplot(1,1,1)
% a) plot x((n-6))15 
n = 0:10; x = 10*(0.8) .^ n;
 y = cirshift(x,6,15);
 n = 0:14; x = [x, zeros(1,4)];
 subplot(2,1,1); stem(n,x); title("Original sequence");
 xtitle("n"); ytitle("x(n)");
 subplot(2,1,2); stem(n,y);
 title("Circularly shifted sequence, N=15") xtitle("n"); ytitle("x((n-6) modulo 15)");