initial commit / add all books

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diff --git a/3542/CH9/EX9.1/Ex9_1.sce b/3542/CH9/EX9.1/Ex9_1.sce
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+// Example no 9.1

+// To find the intermodulation frequencies generated 

+// Page no. 451

+

+clc;

+clear all;

+

+// Given data

+f1=1930;                                         // First carrier frequency

+f2=1932;                                         // second carrier frequency

+F1=1920;                                         // Lower frequency of the band

+F2=1940;                                         // Upper frequency of the band

+

+for n=0:3

+    x1=(2*n+1)*f1-2*n*f2

+    if x1 < = F2 then

+        printf('\n IF frequency %0.0f MHz lies inside the band',x1);

+    else

+        printf('\n IF frequency %0.0f MHz lies outside the band',x1);

+    end

+end

+

+for n=0:3

+    x2=(2*n+2)*f1-(2*n+1)*f2

+    if x2 < = F2 then

+        printf('\n IF frequency %0.0f MHz lies inside the band',x2);

+    else

+        printf('\n IF frequency %0.0f MHz lies outside the band',x2);

+    end

+end

+

+for n=0:3

+    x3=(2*n+1)*f2-2*n*f1

+    if x3 < = F2 then

+        printf('\n IF frequency %0.0f MHz lies inside the band',x3);

+    else

+        printf('\n IF frequency %0.0f MHz lies outside the band',x3);

+    end

+end

+

+for n=0:3

+    x4=(2*n+2)*f2-(2*n+1)*f1

+    if x4 < = F2 then

+        printf('\n IF frequency %0.0f MHz lies inside the band',x4);

+    else

+        printf('\n IF frequency %0.0f MHz lies outside the band',x4);

+    end

+end