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+//CHAPTER 2- STEADY-STATE ANALYSIS OF SINGLE-PHASE A.C. CIRCUIT
+//Example 1
+
+disp("CHAPTER 2");
+disp("EXAMPLE 1");
+
+//Find the Form Factor of the half-wave rectified sine wave as shown in Fig 2.20
+//Peak value of voltage is Vm
+//Period is 2pi
+//v=Vm sinwt  for 0<wt<pi
+//v=0         for pi<wt<2pi
+
+//SOLUTION
+
+//average value Vav by integrating v over 0 to pi and pi to 2pi and dividing by 2pi
+//assume Vm=1, as value not given
+//The second term of integration not computed as v=0 on the range pi to 2pi
+v_av=(integrate('sin(x)','x',0,%pi))/(2*%pi);
+
+//rms value 
+//assume Vm=1, as value not given
+v_rms=(integrate('sin(x)^2','x',0,%pi))/(2*%pi);
+v_rms=sqrt(v_rms);
+
+ff=v_rms/v_av;
+//truncate the answer to 3 digits while displaying: 
+disp(sprintf("The form factor is %4.3f",ff));//The answer in the textbook is wrongly shown as 1.572
+
+//END
+
+