3 Section 3.10, Systems of differential equations. Equal roots. Page 352

 3.1 problem Example 1, page 348
 3.2 problem Example 2, page 349
 3.3 problem 1
 3.4 problem 2
 3.5 problem 3
 3.6 problem 4
 3.7 problem 5
 3.8 problem 6
 3.9 problem 7
 3.10 problem 8