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+//Scilab Code for Example 5.3 of Signals and systems by
+//P.Ramakrishna Rao
+clear;
+clc;
+//Inverse Fourier Transform
+w=-20:20;
+X=4*(cos(w))^2;
+a = gca();
+a.y_location ="origin";
+a.x_location ="origin";
+plot(w,X);
+title("X(e^jw)");
+xlabel("Frequency in Radians/sec");
+figure(1);
+n=-50:50;
+x=2*sinc(n)+sinc(n+2)+sinc(n-2);
+a = gca ();
+a.y_location ="origin";
+a.x_location ="origin";
+plot2d3(n,x);
+title("x(n)");
+xlabel("Time in sec");
diff --git a/1592/CH5/EX5.3/Fig5_3_1.jpg b/1592/CH5/EX5.3/Fig5_3_1.jpg
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diff --git a/1592/CH5/EX5.3/Fig5_3_2.jpg b/1592/CH5/EX5.3/Fig5_3_2.jpg
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