I have a very big problem in answering this equation.>Int(1/sqrt((x-R*cos(theta))^2+(y-R*sin(theta))^2+z^2), theta = 0 .. 2*Pi)+Int(1/sqrt((x+l*cos(alpha)-R*cos(theta))^2+(y-R*sin(theta))^2+(z+l*sin(alpha))^2), theta = 0 .. 2*Pi)I've put the equation. then simplify(%). It becomes like this:Int(1/sqrt(x^2-2*x*R*cos(theta)+R^2+y^2-2*y*R*sin(theta)+z^2), theta = 0 .. 2*Pi)+Int(1/sqrt(x^2+2*x*l*cos(alpha)-2*x*R*cos(theta)-2*l*cos(alpha)*R*cos(theta)+y^2-2*y*R*sin(theta)+R^2+z^2+2*z*l*sin(alpha...