84.21 Chapter 13. nth Order linear homogeneous differential equations with constant coefficients. Solved problems. Page 67

84.21.1 problem 13.1
84.21.2 problem 13.2
84.21.3 problem 13.3
84.21.4 problem 13.4
84.21.5 problem 13.5
84.21.6 problem 13.6
84.21.7 problem 13.7
84.21.8 problem 13.8
84.21.9 problem 13.9