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+clc
+//Example 15.9
+//Install Symbolic toolbox
+//Find the inverse Laplace transform
+syms s
+s=%s
+//Let a=1 and b=3
+a=1;b=3;
+V=1/((s+a)*(s+b))
+Vp=pfss (V)
+Vp1=ilaplace(Vp(1))
+Vp2=ilaplace(Vp(2))
+v=Vp1+Vp2
+disp(v,'v(t)=')
+\ No newline at end of file