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diff --git a/165/CH15/EX15.3/ex15_3.sce b/165/CH15/EX15.3/ex15_3.sce
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+//Example 15.3
+clc;
+
+//Design a 2nd order LPF having a cutoff frequency of 2 kHz
+fh=2000;        //Cutoff frequency in Hz
+C2=3.3*10^-9;   //Assumed value of capacitor
+C3=C2;
+R=invr(2*%pi*fh*C2);
+//Assume a std value of R
+R=22*10^3;
+R2=R;
+R3=R;
+R1=10000;            //Assumed
+Rf=.560*R1;
+
+printf('\nAssumed values of Capcitors C2 & C3 = %.2f nF\n',C2*10^9)
+printf('\nValues of Resistors R2 & R3 = %.2f k ohm\n',R2/10^3)
+printf('\nValues of Feedback Resistor Rf = %.2f k ohm\n',Rf/10^3)
+printf('\nValues of Input Resistors R1 = %.2f k ohm\n',R1/10^3)
+\ No newline at end of file