11 Chapter 16. Linear equations with constant coefficients (Short methods). Supplemetary problems. Page 107

11.1 problem 26
11.2 problem 27
11.3 problem 28
11.4 problem 29
11.5 problem 30
11.6 problem 31
11.7 problem 32
11.8 problem 33
11.9 problem 34
11.10 problem 36
11.11 problem 37
11.12 problem 38
11.13 problem 39
11.14 problem 40