Is it possible get a solution of this equation without RoofOf in form explicit?

I'm trying plot  with implicitplot a expresion which involve Lambert W, but the result is very confuse, is it normal? Could i improve the result?, how?. Thank!

When Maple 2017?. Are there anybody about the new features of this version?. I,m waiting for a special project.

What can i do in this case? I,m traying solve a system of non linear equation like this, i want to know Rs and Rsh:

I'm trying solve a problem with NLPSolve using procedures like constraints, but it say: Error, (in Optimization: -NLPSolve) constraints must be specified as a set or list of procedures. Theses constraints are inequality and equality.  How i can get procedures as a list or set?. Is there anyone to give a example of it?. Thanks!