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diff --git a/3838/CH2/EX2.3.a/EX2_3_a.sce b/3838/CH2/EX2.3.a/EX2_3_a.sce
new file mode 100644
index 000000000..d2bd8c466
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+++ b/3838/CH2/EX2.3.a/EX2_3_a.sce
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+//ex_2.3.a even and odd signals of x(t)
+clear;
+clc;
+close;
+t = 0:0.01:5;
+x=exp(t)
+figure
+a=gca();
+xtitle('x(t)')
+plot2d(t,x)
+figure
+a=gca();
+xtitle('even signal')
+plot2d(t,x/2)
+t1=-5:1/100:0;
+plot2d(t1,x($:-1:1)/2)
+a.y_location='origin'
+figure
+a=gca();
+xtitle('odd signal')
+plot2d(t,x/2)
+t1=-5:1/100:0;
+plot2d(t1,-x($:-1:1)/2)
+a.y_location='origin'
+a.x_location='origin'