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+//Chapter 3, Example 3.9, page 89
+clc
+//Initialisation
+rh=-1
+s=4                                    //sigma in S/m
+f=5*10**9                              //frequency in Hz
+eo=8.85*10**-12                        //permitivity of free space
+er=75                                  //permitivity of medium
+w1=30*3.14*180**-1                     //in radians
+pi=3.14
+
+
+//Calculation
+w=2*pi*f
+x=s*(w*eo)**-1
+a=sin(w1)-sqrt((er-x)-cos(w1)**2)
+a1=sin(w1)+sqrt((er-x)-cos(w1)**2)
+rh1=a/a1
+b1=(er-x)*sin(w1)-sqrt((er-x)-cos(w1)**2)
+b2=(er-x)*sin(w1)+sqrt((er-x)-cos(w1)**2)
+rv=-b1/b2
+
+
+//Results
+printf("(2) X = %.1f",x)
+printf("\n(3) Rh = %.3f",rh1)
+printf("\n    Rv = %.1f",rv)