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+//Example 1.23
+//Find the even and odd components of the signal x(t)=(e^-2t)*cos(t)
+clc;
+clear all;
+t=-10:.1:10;
+for j=1:length(t)
+i=t(j);
+x(j)=(exp(-2*i))*cos(i);
+y(j)=(exp(2*i))*cos(i);
+e(j)=(1/2)*(x(j)+y(j));
+o(j)=(1/2)*(x(j)-y(j));
+end
+disp('In the plot even component is in red and odd component is in blue')
+plot(t,e,'red')
+plot(t,o,'blue')