35.5 Chapter 8, Ordinary differential equations. Section 5. SECOND-ORDER LINEAR EQUATIONSWITH CONSTANT COEFFICIENTS AND ZERO RIGHT-HAND SIDE. page 414

35.5.1 problem 1
35.5.2 problem 2
35.5.3 problem 3
35.5.4 problem 4
35.5.5 problem 5
35.5.6 problem 6
35.5.7 problem 7
35.5.8 problem 8
35.5.9 problem 9
35.5.10 problem 12
35.5.11 problem 19
35.5.12 problem 20
35.5.13 problem 24
35.5.14 problem 25
35.5.15 problem 26
35.5.16 problem 28