I am currently trying to corralate Reynold's and Prundtl number to find the Nusselt number. The equation is Nu = C*Re^n*Pr^m , where C,n,m are non integer constants. I have 5 pieces of data where I know Nu,Re, and Pr. My aim is to find C,n,m. I have looked through a bunch of curve fitting techniques but all of them seem to work only for integer powers. Any suggestions?