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clear//
//Variables
Rin = 4.2 * 10**3 //Input resistance (in ohm)
Av = 220.0 //Voltage gain without feedback
beta = 0.01 //Feedback ratio
f1 = 1.5 * 10**3 //Cut off frequency without feedback (in Hertz)
f2 = 501.5 * 10**3 //Cut off frequency with feedback (in Hertz)
//Calculation
R1i = (1 + beta * Av) * Rin //Input resistance of feedback amplifier (in ohm)
f11 = f1 / (1 + beta * Av) //New cut off frequency without feedback (in Hertz)
f21 = (1 + beta * Av) * f2 //New cut off frequency with feedback (in Hertz)
//Result
printf("\n The value of input resistance with feedback is %0.3f kilo-ohm.\nNew cut off frequency without feedback is %0.0f Hz.\nNew cut off frequency with feedback is %0.3f kHz.",R1i*10**-3,f11,f21*10**-3)
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