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diff --git a/3556/CH9/EX9.3/Ex9_3.sce b/3556/CH9/EX9.3/Ex9_3.sce
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+clc
+// Fundamental of Electric Circuit 
+// Charles K. Alexander and  Matthew N.O Sadiku  
+// Mc Graw Hill of New York 
+// 5th Edition 
+
+// Part 2     :  AC Circuits 
+// Chapter 9  :  Sinusoids and Phasors
+// Example 9 - 3
+
+clear; clc; close; 
+//
+// Given data
+Z1 =  complex(40*cosd(50.0000),40*sind(50.0000));
+Z2 =  complex(20*cosd(-30.0000),20*sind(-30.0000));
+Z3 =  complex(10*cosd(-30.0000),10*sind(-30.0000));
+Z4 =  complex(3.0000,-4.0000);
+Z5 =  complex(2.0000,4.0000);
+Z6 =  conj(complex(3.0000,-5.0000));
+//
+// Calculations Part a
+Ztot_a = Z1 + Z2;
+Ztot_a_mag = norm(Ztot_a);
+Ztot_a_angle = atand(imag(Ztot_a),real(Ztot_a))
+Ztot_mag_a = sqrt(Ztot_a_mag);
+Ztot_angle_a = 0.500 * Ztot_a_angle;
+// Calculations Part b 
+Ztot_b = (Z3 + Z4)/(Z5*Z6);
+Ztot_mag_b = norm(Ztot_b);
+Ztot_angle_b = atand(imag(Ztot_b),real(Ztot_b));
+//
+disp("Example 9-3 Solution : ");
+disp("a. Part a : ");
+printf(" \n Ztot_mag_a   = Magnitude of Ztot a        = %.3f ",Ztot_mag_a)
+printf(" \n Ztot_angle_a = Angle of Ztot a            = %.3f degree",Ztot_angle_a)
+disp("")
+disp("b. Part b : ");
+printf(" \n Ztot_mag_b   = Magnitude of Ztot b        = %.3f ",Ztot_mag_b)
+printf(" \n Ztot_angle_b = Angle of Ztot b            = %.3f degree",Ztot_angle_b)
+