15 Chapter 5. The Laplace Transform Method. Exercises 5.4, page 265

15.1 problem 4 (a)
15.2 problem 4 (b)
15.3 problem 4 (c)
15.4 problem 4 (d)
15.5 problem 4 (e)
15.6 problem 4 (g)
15.7 problem 4 (h)