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+clc
+//Chapter8
+//Example8.5, page no 317
+//Given
+a=0.7//attenuation constant
+b=0.3//phase constant
+Gamma=a+(%i*b)//propagation constant
+l=0.5// half length of line( for midpoint)
+Vs=10// Excitation voltage
+V_mod=Vs*(%e^(-a*l))//Magnitude of the Vs
+
+phi=b*l*180/%pi//phase shift
+V=V_mod*(%e^(-%i*(phi*%pi/180)))//voltage at the mid point
+mprintf('the voltage at the mid point of the line is \n%f /_-%fdegrees Volts',V,phi)
+
+// Note : There are some calculation errors in the solution presented in the book