PV= Constant PV=\text{ Constant }PV= Constant
PVγ−1= Constant PV^{\gamma -1}=\text{ Constant }PVγ−1= Constant
PV1−γ= Constant PV^{1-\gamma }=\text{ Constant }PV1−γ= Constant
TVγ−1= Constant TV^{\gamma -1}=\text{ Constant }TVγ−1= Constant
