43.6 Chapter 2. Linear equations with constant coefficients. Page 69

43.6.1 problem 1(a)
43.6.2 problem 1(b)
43.6.3 problem 1(c)
43.6.4 problem 1(d)
43.6.5 problem 1(e)
43.6.6 problem 1(f)
43.6.7 problem 1(g)
43.6.8 problem 1(h)
43.6.9 problem 1(i)
43.6.10 problem 1(j)
43.6.11 problem 4(c)