1. The problem statement, all variables and given/known data Show that the solution u(r,theta) of Laplace's equation (nabla^2)*u=0 in the semi-circular region r<a, 0<theta<pi, which vanishes on theta=0 and takes the constant value A on theta=pi and on the curved boundary r=a, is u(r,theta)=(A/pi)[theta + 2*summation ((r/a)^n*((sin n*theta)/n)]) 2. Relevant equations 3. The attempt at a solutionI didn't now where to even begin. I am struggling and am requesting help in explaining what I do not understand. Thanks!