81.15 Chapter 19. Change of variables. Page 483

81.15.1 problem 19-1
81.15.2 problem 19-2
81.15.3 problem 19-3
81.15.4 problem 19-4
81.15.5 problem 19-5
81.15.6 problem 19-6
81.15.7 problem 19-8
81.15.8 problem 19-9
81.15.9 problem 19-10
81.15.10 problem 19-11
81.15.11 problem 19-12
81.15.12 problem 19-13
81.15.13 problem 19-14
81.15.14 problem 19-15
81.15.15 problem 19-16
81.15.16 problem 19-17
81.15.17 problem 19-18
81.15.18 problem 19-19
81.15.19 problem 19-20
81.15.20 problem 19-21
81.15.21 problem 19-22