70.28 Chapter 6. Systems of First Order Linear Equations. Section 6.6 (Nonhomogeneous Linear Systems). Problems at page 436

70.28.1 problem 2
70.28.2 problem 3
70.28.3 problem 4
70.28.4 problem 5
70.28.5 problem 6
70.28.6 problem 7
70.28.7 problem 8
70.28.8 problem 9
70.28.9 problem 10 (a)