series solution about singular pointsproblem 1/(ii) Problem 1 Find the singular points of the given differential equation then classify them. (i) \( x^{2} y^{\prime \prime}-(x+1) y^{\prime}+e^{x} y=0 \). (ii) \( (x-3) y^{\prime \prime}+x y^{\prime}+4 y 1 answer