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+// A Texbook on POWER SYSTEM ENGINEERING
+// A.Chakrabarti, M.L.Soni, P.V.Gupta, U.S.Bhatnagar
+// DHANPAT RAI & Co.
+// SECOND EDITION 
+
+// PART IV : UTILIZATION AND TRACTION
+// CHAPTER 5: ELECTRIC TRACTION-SPEED TIME CURVES AND MECHANICS OF TRAIN MOVEMENT
+
+// EXAMPLE : 5.2 :
+// Page number 778
+clear ; clc ; close ; // Clear the work space and console
+
+// Given data
+V_m = 65.0        // Maximum speed(kmph)
+t = 30.0          // Time of stop(sec)
+speed = 43.5      // Scheduled speed(kmph)
+alpha = 1.3       // Acceleration(km phps)
+D = 3.0           // Distance between 2 stops(km)
+
+// Calculations
+t_total = D*3600/speed                                 // Total time of run including stop(sec)
+T = t_total-t                                          // Actual time for run(sec)
+V_a = D/T*3600                                         // Average speed(kmph)
+beta = 1/((7200.0*D/V_m**2*((V_m/V_a)-1))-(1/alpha))   // Value of retardation(km phps)
+
+// Results
+disp("PART IV - EXAMPLE : 5.2 : SOLUTION :-")
+printf("\nValue of retardation, β = %.3f km phps\n", beta)
+printf("\nNOTE: Changes in the obtained answer from that of textbook is due to more precision here")
+printf("\n      ERROR: β unit is km phps & not km phps as mentioned in textbook solution")