72.28 Chapter 10. Systems of First Order Equations. Section 56. Homogeneous Linear Systems with Constant Coefficients. Problems at page 505

72.28.1 problem 1 (a)
72.28.2 problem 1 (b)
72.28.3 problem 1 (c)
72.28.4 problem 1 (d)
72.28.5 problem 1 (e)
72.28.6 problem 1 (f)
72.28.7 problem 1 (g)
72.28.8 problem 1 (h)
72.28.9 problem 5 (b)