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+// Ex 29 Page 372
+
+clc;clear;close;
+// Given
+fT=6*10**6;//Hz
+hfe=50;
+Rs=500;//ohm
+gm=0.04;//S
+rbb_dash=100;//ohm
+Cc=10*10**-12;//F
+RL=1;//kohm
+
+rbe=hfe/gm;//ohm
+Ce=gm/2/%pi/fT;//F
+C=Ce+Cc*(1+gm*RL);//F
+hie=rbb_dash+rbe;//ohm
+R=(Rs+rbb_dash)*rbe/((Rs+rbb_dash)+rbe);//ohm
+f2=1/2/%pi/R/C;//Hz
+printf("Voltage gain upper BW frequency = %.2f MHz",f2/10**6)
+AIS=-hfe*Rs/(Rs+hie);//current gain
+printf("\n Current gain = %.2f",AIS)
+AVS=-hfe*RL*1000/(Rs+hie);//voltage gain
+printf("\n Voltage gain = %.2f",AVS)
+AVSf2=AVS*f2;//Hz
+printf("\n Voltage gain BW product = %.2f MHz",abs(AVSf2/10**6))
+AISf2=AIS*f2;//Hz
+printf("\n Current gain BW product = %.2f MHz",abs(AISf2/10**6))
+
+//answer in the textbook are wrong.