Extrapolation Algorithm for Computing Multiple Cauchy Principal Value Integrals

Table 8

A posterior error of the rectangle rule with .

16
32	−1.2718e − 01
64	−6.0730e − 02	1.9067e − 03
128	−2.7510e − 02	1.9033e − 03	1.4049e − 04
256	−1.2673e − 02	7.2168e − 04	8.1521e − 04	2.0581e − 05
512	−6.0118e − 03	2.1629e − 04	2.0496e − 05	1.5653e − 06
1024	−2.9175e − 03	5.8910e − 05	2.7647e − 06	1.0807e − 07