Extrapolation Algorithm for Computing Multiple Cauchy Principal Value Integrals

Table 10

A posterior error of the rectangle rule with .

8
16	−8.0769e − 02
32	−6.0289e − 02	−1.3270e − 02
64	−3.6980e − 02	−4.5571e − 03	−7.0842e − 04
128	−2.0481e − 02	−1.3272e − 03	−1.0738e − 04	−1.0040e − 05
256	−1.0776e − 02	−3.5710e − 04	−1.4456e − 05	−5.5157e − 07