.TILMedia.BaseClasses.PartialGasFunctions.densityDerivativeWRTpressure_pTxi .TILMedia.BaseClasses.PartialGasFunctions.densityDerivativeWRTpressure_pTxipartial function densityDerivativeWRTpressure_pTxi = TILMedia.BaseClasses.PartialGasFunctionPrototypes.densityDerivativeWRTpressure_pTxi;