(a).
\The series is
.
Find the
term of the series.

Therefore
are required to approximate the sum of the series with an error less than
.
(b).
\Graph:
\Graph the sequence
from
to
:

Observe the graph:
\The value of the sequence
to
are listed.
Find
.


.
(a).
are required to approximate the sum of the series with an error less then
.
(b). 
.