72.21 Chapter 6. Laplace transform. Section 6.6. page 624

72.21.1 problem 1
72.21.2 problem 2
72.21.3 problem 3
72.21.4 problem 4
72.21.5 problem 5
72.21.6 problem 6
72.21.7 problem 7
72.21.8 problem 8