3.1

3.2

3.3

6. d. meters from one end to another

7 (a) -6

7a. 4

8a. 1

8b. -1/4

8c. 0

8d. 0

8e. undefined

9. f (x)=ln(x)/x

Critical point (e, 1/e)

Inflection point (e^3/2, 3/ (2e^3/2))