//Ex7_1 Pg-369
clc

disp("Refer to the figure 7.19")
disp("For good coupling")
disp("              Xc <= 0.1*R")
R=10*10^(3) //resistor R in ohm
C=68*10^(-6) //capacitance in Farad
f=1/(2*%pi*C*0.1*R)
disp("Lowest frequency,f")
printf("                = %.2f Hz",f)
disp("or lowest frequency is approximately 3 Hz")