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Y=4
d1=100
B=1//(say)
Ptm=1//(say)
Prm1=B*Ptm/(d1)^Y
d2=10000
Prm2=B*Ptm/(d2)^Y
Prm1IPrm2=Prm1/Prm2//expected differnce in recieved power level
Prm1IPrm2dB=10*log10(Prm1IPrm2)
printf('expected differnce in recieved power level=%.f dB',-Prm1IPrm2dB)
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