- #1

Elder1994

- 6

- 1

**ρ.**I need to calculate it by applying the Laplacian operator to the potential

**Θ**. The potential is the function:

**q*exp(-αr)/r**

I found on the internet that for this type of potentials I cannot just apply the Laplacian operator because the function is not differentiable as

**r**approaches to

**0**. So I'm not sure what I'm supposed to do with this.