Chapter 02 - An ancient theorem and a modern question

Exer. 2.1

Exer. 2.1 a solution which challenges the one above.

Exer. 2.2

Exer. 2.2 another solution

Exer. 2.3

Exer. 2.3 another solution

Exer. 2.4

Exer. 2.4 another solution

Exer. 2.5

Exer. 2.6

Exer. 2.6 another solution

Exer. 2.6 yet another solution

Exer. 2.7

Exer. 2.7 another solution

Exer. 2.8

Exer. 2.8 another solution