Extrapolation Algorithm for Computing Multiple Cauchy Principal Value Integrals

Table 9

Extrapolation errors of the rectangle rule with .

8	−2.2044e − 01
16	−1.3967e − 01	−5.8905e − 02
32	−7.9385e − 02	−1.9096e − 02	−5.8267e − 03
64	−4.2405e − 02	−5.4249e − 03	−8.6774e − 04	−1.5932e − 04
128	−2.1924e − 02	−1.4433e − 03	−1.1610e − 04	−8.7182e − 06
256	−1.1148e − 02	−3.7200e − 04	−1.4901e − 05	−4.4454e − 07