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+//clear//

+//Example 1.15:Classification of a System:Time Invariance Property

+//Page 51

+//To check whether the given system is a Time variant (or) Time In-variant

+// The given discrete signal is y[n] = n.x[n]

+clear;

+clc;

+no = 2; //Assume the amount of time shift  =2

+L = 10; //Length of given  signal

+for n = 1:L

+  x(n) = n;

+  y(n) = n*x(n);

+end

+//First shift the input signal only

+Input_shift = x(L-no);

+Output_shift = y(L-no);

+if(Input_shift == Output_shift)

+  disp('The given discrete system is a Time In-variant system');

+else

+  disp('The given discrete system is a Time Variant system');

+end