~Electrodynamics~ Potential from charged sphere. I am lost :/ 1. The problem statement, all variables and given/known data A sphere of radius R, centered at the origin, carries a charge density ρ(r,θ)=κ/r^2(R-2r)sin^2(θ). κ is constant. Find exact potential. 2. Relevant equations 1/4∏ε∫ρ∂t/r 3. The attempt at a solution Question and attempt via attachments :) I do not think my solution is correct please help! Thanks all for looking!