.TILMedia.BaseClasses.PartialGasObjectFunctions.densityDerivativeWRTpressure_pTxi .TILMedia.BaseClasses.PartialGasObjectFunctions.densityDerivativeWRTpressure_pTxipartial function densityDerivativeWRTpressure_pTxi = TILMedia.BaseClasses.PartialGasObjectFunctionPrototypes.densityDerivativeWRTpressure_pTxi;