//chapter 13
//example 13.15
//page 585
printf("\n")
printf("given")
Av=60000;Acl=300;f1=15*10^3;B=1/300;
f2=(Av*f1)/Acl
disp("% distortion with NFB")
NFB=(.1/(1+Av*B))*100;
printf(" percenatge  distortion with NFB is %3.3f\n",NFB)