Find all singular points in the complex plane for the linear differential equation (2+x2)xy+2xy+x2y =0.(b)(5 points) If one attempts to solve the initial value problem (2+ x2)y+2y+ xy =0, y(1)=0, y(1)=1, by an expansion of the form y(x)= an(x 1)n, use the result of n=0 part (a) to find a lower bound for the radius of convergence of the solution