initial commit / add all books

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diff --git a/881/CH1/EX1.12/exa1_12.sce b/881/CH1/EX1.12/exa1_12.sce
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+clc;
+//Example 1.12
+//Page no 25
+
+
+//Solution
+
+V1=8;
+V2=0.2;
+V3=0.1;
+
+//(a)
+
+
+h1=2*1;
+
+disp('kHz',h1,"2nd harmonic = ");
+
+h2=3*1;
+
+disp('kHz',h2,"3rd harmonic = ");
+
+h3=12*1;
+
+disp('kHz',h3,"12th harmonic = ");
+
+//(b)
+
+disp("(b) ")
+
+p1=(V2/V1)*100;
+
+disp('%',p1,"%2nd order = ");
+
+p2=(V3/V1)*100;
+
+disp('%',p2,"%3nd order = ");
+
+THD=([sqrt((0.2^2)+(0.1^2)) ]/8)*100;
+
+disp('%',THD," Total harmonic distortion = ");
+
+