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diff --git a/3838/CH3/EX3.22/EX3_22.sce b/3838/CH3/EX3.22/EX3_22.sce
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+++ b/3838/CH3/EX3.22/EX3_22.sce
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+//Example 3.22
+clc;
+syms s t;
+x=laplace(exp(-2*t)*cos(3*t),t,s);
+y=laplace(4*sin(3*t),t,s);
+z=x*y
+i=ilaplace(z);
+disp(i);