Chapter 3

Ex3-1$\checkmark$

Ex3-2 (only do part (a))

Ex3-3 $$\checkmark$$

Ex3-7 $$\checkmark$$

Ex3-8 $$\checkmark$$

Ex3-9 $$\checkmark$$

Ex3-10$\checkmark$

Ex3-11$\checkmark$

Ex3-12

Ex3-28 $\checkmark$