Find the series solution of the differential a) Equations by the method of Frobenuis i) xy" + xy' + (x v)y = 0 (31/2 marks) ii) 2xy" xy' + (1 +x)y = 0 (3 1/2 marks) b) Equatiens by.pov suries method. (1 x)y" 2xy' + n(n+ 1)y = 0 (31/2 marks) (31/2 c) Determine the radius of Convergenc&f the power series (3/2 marks) i) %3D ii) y" + y = 0 co < x < co marks) (x+1)" n2n 72-1