84.22 Chapter 13. nth Order linear homogeneous differential equations with constant coefficients. Supplementary problems

84.22.1 problem 13.10
84.22.2 problem 13.11
84.22.3 problem 13.12
84.22.4 problem 13.13
84.22.5 problem 13.14
84.22.6 problem 13.16
84.22.7 problem 13.17
84.22.8 problem 13.18
84.22.9 problem 13.19