for each of the states, construct the normalized wave function. this requires finding the coefficients that determine the form of the solution. the notes contain expressions for each of a, c, and d for the even parity (positive root) solutions and for the odd parity (negative root) solutions so you do not need to re-derive them, just use the expressions given for the full solutions. also, expressions for the normalization constant are given in the notes with one form for the even states ( ) states and one for the negative (-) states.