Originally Posted by

**braddy** Hi I have this problem that I cannot find the solution:

2 students propose the following 2 different flux densities as solutions to an electrostatics problem:

D1= ε* ρ^2 **ρ** (**ρ, φ** unit vector)

D2= ε*ρ^2 *(sin(φ))^2 **ρ**+ 3*ε*ρ*z*(cos(φ))^2**φ**

Show that the volume charge densities that correspond to these two fields are identical.

I tried to apply the divergence to D1 and D2 but I don't find the same response.

So I dont know what else I can do here.

Please can I have some help?