26.3 Chapter 2. Special types of differential equations of the first kind. Lesson 9

26.3.1 problem Exact Differential equations. Exercise 9.4, page 79
26.3.2 problem Exact Differential equations. Exercise 9.5, page 79
26.3.3 problem Exact Differential equations. Exercise 9.6, page 79
26.3.4 problem Exact Differential equations. Exercise 9.7, page 79
26.3.5 problem Exact Differential equations. Exercise 9.8, page 79
26.3.6 problem Exact Differential equations. Exercise 9.9, page 79
26.3.7 problem Exact Differential equations. Exercise 9.10, page 79
26.3.8 problem Exact Differential equations. Exercise 9.11, page 79
26.3.9 problem Exact Differential equations. Exercise 9.12, page 79
26.3.10 problem Exact Differential equations. Exercise 9.13, page 79
26.3.11 problem Exact Differential equations. Exercise 9.15, page 79
26.3.12 problem Exact Differential equations. Exercise 9.16, page 79
26.3.13 problem Exact Differential equations. Exercise 9.17, page 79