Hello.
I find myself trying to calculate the compressibility factor of natural gas based on the procedure of calculating the attached document and check if the template is crafted correctly with a given example therein. I do not know how I'm doing it is the most appropriate because I am newbie using M15, but in trying to solve a system of equations I get one of the variables is not defined.
Hope you can help me and if there is something ridiculous in the preparation of such return please hagamenlo know.