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+// Example 5.19:corner frequency 
+clc;
+clear;
+close;
+Rs=1;//series resistance in killo ohms
+Rl=3.7;//load resistance in killo ohms
+Rc=3.7;// Collector resistance in killo ohms
+R1= 200;// in kilo ohms
+R2= 200;// in kilo ohms
+Vbe=0.7;// Base to emitter voltage in volts
+Rb= (R1*R2)/(R1+R2);
+rpi=2.5;//resistance in killo ohms
+Cpi=0.18;//capacitance in pico farad
+gm=40;//transconductance in milli ampere per volts
+y=(Rc*Rl)/(Rc+Rl);//
+Cmu= Cpi*(1+gm*y);//
+Cm2=Cmu;//
+z=(Rs*rpi)/(Rs+rpi);//
+R=(Rb*z)/(Rb+z);//
+C=Cmu+4;//
+f3db= (1/(2*%pi*R*10^3*C))*10^6;//3-dB frequency in mega hertz
+C1=4;//capacitance in pico farad
+f3db1= (1/(2*%pi*R*10^3*C1))*10^6;//3-dB frequency in mega hertz
+disp(f3db,"3-dB frequency in mega hertz due to miller effect")
+disp(f3db1,"3-dB frequency in mega hertz")
+disp("due to miller effect the capacitance gets multiplied by 75 .hence due to miller effect the bandwidth is reduced")