Eh??? How do I solve xe^(a/x) = b? 1. The problem statement, all variables and given/known data xe^(-a/x) = b, where a and b are numbers that are given and I'm trying to solve for x. 3. The attempt at a solution All I can think of are Taylor series, which won't work in this case because a is ~4000 and b = ~0.1, so I'd need to expand to a lot of terms. I could try to do it numerically, but would rather not... I know the answer ends up being ~520.