11 Chapter 2. Linear equations with constant coefficients. Page 93

11.1 problem 1(a)
11.2 problem 1(b)
11.3 problem 1(c)
11.4 problem 1(d)
11.5 problem 1(e)
11.6 problem 1(f)
11.7 problem 1(g)
11.8 problem 1(h)
11.9 problem 1(i)