1. The problem statement, all variables and given/known data In the region x ≥ 0 there is an electrostatic potential V(x)=xexp(-λx) where λ>0 What is the electrostatic field at x→∞ 2. Relevant equations 3. The attempt at a solution My understanding is there is no fields at infinity because there is no electrostatic potential? Sorry but I am so confused???