Chapter 9.2, Problem 77E

a.

To determine

To sketch: The graph of $f\left(x\right)$ and $S_n\left(x\right)$ with $n=5\text{ and n=10}$.

b.

To determine

To explain: The value of n is needed to guarantee that $\left|f\left(x\right)-S_n\left(x\right)\right|<0.01$ at all of the sample points.