70.8 Chapter 3. Systems of two first order equations. Section 3.4 (Complex Eigenvalues). Problems at page 177

70.8.1 problem 1
70.8.2 problem 2
70.8.3 problem 3
70.8.4 problem 4
70.8.5 problem 5
70.8.6 problem 6
70.8.7 problem 7
70.8.8 problem 8
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70.8.10 problem 10
70.8.11 problem 11
70.8.12 problem 12
70.8.13 problem 13
70.8.14 problem 14
70.8.15 problem 15
70.8.16 problem 16
70.8.17 problem 17
70.8.18 problem 18
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70.8.20 problem 20
70.8.21 problem 21