1. The problem statement, all variables and given/known data A long cylinder of radius a with magnetization vector M=M_0*(r/a)^2*a_φ. Find the magnetic flux density inside and outside the cylinder. 2. Relevant equations J_m=∇×M J_ms=M×a_n A=(μ_0/4*π)*(∫(J_m/R)dv+∫(J_ms/R)ds) B=∇×A 3. The attempt at a solution Basicly what I thought I'd do is find J_m and J_ms and insert that into A equation and then insert A into B equation. My main problem is I'm not sure how to compute the integrals and also not sure how to divide the problem between inside and outside the cylinder.