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+//Example 3.15
+clear;
+clc;
+to = 2; //Assume the amount of time shift  =2
+T=10;
+for t = 1:0.01:T
+  x(t) = sin(t);
+  y(t) = sin(2*t);
+end
+//First shift the input signal only
+Input_shift = x(T-to);
+Output_shift = y(T-to);
+if(Input_shift == Output_shift)
+  disp('The given system is a Time In-variant system');
+else
+  disp('The given system is a Time Variant system');
+end