13 Chapter 20, Series solutions of second order linear equations. Exercises page 195

 13.1 problem 20.1
 13.2 problem 20.2 (i)
 13.3 problem 20.2 (ii)
 13.4 problem 20.2 (iii)
 13.5 problem 20.2 (iv) (k=-2)
 13.6 problem 20.2 (iv) (k=2)
 13.7 problem 20.3
 13.8 problem 20.4
 13.9 problem 20.5
 13.10 problem 20.7