43.9 Chapter 2. Linear equations with constant coefficients. Page 83

43.9.1 problem 1(a)
43.9.2 problem 1(b)
43.9.3 problem 1(c)
43.9.4 problem 1(d)
43.9.5 problem 1(e)
43.9.6 problem 2
43.9.7 problem 3(a)
43.9.8 problem 3(b)
43.9.9 problem 5(b)