Exercise 5.1 https://bit.ly/30g1YQE
Exercise 5.2 https://bit.ly/2NnGwWD
Exercise 5.3 https://bit.ly/2MoLjav
Exercise 5.4 https://bit.ly/2ZaSKbe
Exercise 5.5 https://bit.ly/2KGGDdW
Exercise 5.6
Examples https://bit.ly/2z9fOsl
Exercise 5.2 https://bit.ly/2NnGwWD
Exercise 5.3 https://bit.ly/2MoLjav
Exercise 5.4 https://bit.ly/2ZaSKbe
Exercise 5.5 https://bit.ly/2KGGDdW
Exercise 5.6
Examples https://bit.ly/2z9fOsl