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+clc;
+close();
+clear();
+//page no 484
+//prob no. 14.9
+ZL=complex(50,100);
+R0=50;
+TauL=(ZL-R0)/(ZL+R0);
+
+mprintf('(a)The reflection coefficient at load is,');
+disp(TauL);
+[R,theta]=polar(TauL);
+mprintf('OR , %.4f angle %i',R,theta*(180/%pi));
+
+S=(1+R)/(1-R);
+mprintf('\n (b) The standing wave ratio is, S = %.3f \n',S);