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+//Find dft of the following sequence
+//Example 8.29.1
+clc;
+n=-10:10;
+for i=1:length(n)
+    if n(i)==0 then
+        x(i)=1;
+    else
+        x(i)=0;
+    end
+end
+y=fft(x,-1);
+disp(y,'The dft of the sequence is:');
+//Find dft of the following sequence
+//Example 8.29.2
+clc;
+n=-10:10;n0=2;
+for i=1:length(n)
+    if n(i)==n0 then
+        x(i)=1;
+    else
+        x(i)=0;
+    end
+end
+y=fft(x,-1);
+disp(y,'The dft of the sequence is:');
+//Find dft of the following sequence
+//Example 8.29.3
+clc;
+n=-10:10;a=2;
+for i=1:length(n)
+   x(i)=a^n(i);
+end
+y=fft(x,-1);
+disp(y,'The dft of the sequence is:');
+