Chapter 8.4, Problem 68E

a.

To determine

To explain: The sequence $\left\{F_n\right\}$ is a decreasing sequence.

b.

To determine

To sketch: The graph of $\left\{F_n\right\}$ $\text{ for }n=0,1,2,3,\cdots$.

c.

To determine

To make: A conjecture about $\underset{n\to \infty }{\lim }{F}_n$.