[Section 2.1 solutions]

[Section 2.2 solutions]

[Section 2.3 solutions]

[Section 2.4 solutions]

[Section 4.6 solutions]

[Section 3.1 solutions]

[Section 3.2 solutions]

[Section 3.3 solutions]

[Section 3.5 solutions]

[Section 3.6 solutions]

[Section 3.8 solutions]

[Section 3.7 solutions]

[Section 3.9 solutions]

[Section 3.* solutions]

[Section 4.1 solutions]

[Section 4.2 solutions]

[Section 4.3 solutions]

[Section 4.4 solutions]

[Section 4.5 solutions]

[Section 4.7 solutions]

[Section 4.8 solutions]

[Section 4.10 solutions]

[Section 5.1 solutions]

[Section 5.2 solutions]

[Section 5.3 solutions]

[Section 5.4 solutions]

[Section 5.5 solutions]

[Section 5.6 solutions]