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+// Ex 31 Page 374
+
+clc;clear;close;
+// Given
+G=37;//dB
+f1=50;//Hz
+f2=18.7*1000;//Hz
+BW1=f2;//Hz (f2-f1~=f2)
+
+
+A1=10**(G/20);//Gain
+A3=sqrt(A1);//Gain
+RL1BYRL2=A1/A3;//ratio
+RL2BYRL1=A3/A1;//ratio
+//BW=2*%pi*Cd*RL
+BW1BYBW2=RL2BYRL1;
+BW2BYBW1=RL1BYRL2;
+f2dash=f2*sqrt(sqrt(2)-1);
+BW2=BW2BYBW1*f2dash;//Hz
+printf("Bandwidth of redesigned amplifier, BW=%.f kHz",BW2/1000)