MATLAB code for Lambert W function

Please, I need a help, how do I perform this evaluation

Answer 1

[John D'Errico]

It appears to be part of the symbolic toolbox, so you would need that.

lambertw(3)
ans =
     1.0499

If you actually want the code inside lambertw, all you can do is to read the references. There are references in the help for the function.

Answer 2

[Torsten]

https://blogs.mathworks.com/cleve/2013/09/02/the-lambert-w-function/#c1ea75cb-227b-4aec-959b-6d5b66c07d54

Best wishes

Torsten.