Chapter 54
Elementary differential equations. Rainville, Bedient, Bedient. Prentice Hall. NJ. 8th edition. 1997.

54.1 CHAPTER 8. Nonhomogeneous Equations: Undetermined Coefficients. Exercises Page 142
54.2 CHAPTER 16. Nonlinear equations. Miscellaneous Exercises. Page 340
54.3 CHAPTER 17. Power series solutions. 17.5. Solutions Near an Ordinary Point. Exercises page 355
54.4 CHAPTER 18. Power series solutions. 18.4 Indicial Equation with Difference of Roots Nonintegral. Exercises page 365
54.5 CHAPTER 18. Power series solutions. 18.6. Indicial Equation with Equal Roots. Exercises page 373
54.6 CHAPTER 18. Power series solutions. 18.8 Indicial Equation with Difference of Roots a Positive Integer: Nonlogarithmic Case. Exercises page 380
54.7 CHAPTER 18. Power series solutions. 18.9 Indicial Equation with Difference of Roots a Positive Integer: Logarithmic Case. Exercises page 384
54.8 CHAPTER 18. Power series solutions. 18.11 Many-Term Recurrence Relations. Exercises page 391
54.9 CHAPTER 18. Power series solutions. Miscellaneous Exercises. page 394