Extrapolation Algorithm for Computing Multiple Cauchy Principal Value Integrals

Table 7

Extrapolation errors of the rectangle rule with .

16	−2.3988e − 01
32	−1.1270e − 01	1.4482e − 02
64	−5.1968e − 02	8.7623e − 03	6.8556e − 03
128	−2.4458e − 02	3.0524e − 03	1.1491e − 03	3.3393e − 04
256	−1.1785e − 02	8.8738e − 04	1.6570e − 04	2.5214e − 05
512	−5.7733e − 03	2.3852e − 04	2.2231e − 05	1.7349e − 06
1024	−2.8558e − 03	6.1789e − 05	2.8785e − 06	1.1385e − 07