= A + ProductLog [-Ae^-A]

As a side note... I would double check my equations if in fact you used
"e" and not "E"

Dana DeLouis



WilliamG wrote:
I have discovered that the solution to a problem I am trying to solve is: B
= A + ProductLog [-Ae^-A]. I know A and, obviously, e. Is there a formula I
can type into Excel that will give me the output B? Many thanks indeed for
any help you can offer.