Hi;

I am attempting to convert a differential equation from Cartesian Coordinates into Cylindrical Coordinates using 4 different Wolfram conversion Functions detailed in the attached notebook. I am not sure that any of the functions that I tried are giving me the correct answer. However, answer 1 looks more correct than any of the rest since it actually appears to have converted the equation from Cartesian into Cylindrical coordinates. I am assuming that all the conversion functions should give similar answers and change any reference from (x, y) to (r, [Theta]). Additionally, I would like to know if I am using the functions correctly.

I am sure that the problem is something that I am not understanding or not performing correctly, so I would certainly appreciate any insight you could give.

Thanks,
Mitch Sandlin