
By adding the terms from n 5 k to n 5 p to each expression in the inequalities
above it is possible to put both upper and lower bounds on the sum of the series.
Also it is possible to estimate the error generated in estimating the sum of the series
by using only the first “p” terms. If the error is represented by R
p
,thenitfollowsthat
ð
N
x5p11
f ðxÞdx # R
p
#
ð
N
x5p
f ðxÞdx
5.29 Comparison Tests
There are four comparison tests that are used to test series. There are two conver-
gence tests and two divergence tests. In order to use these tests it is necessary to
know a number of converg ent series and a number of divergent series. For the tests
that follow