Table 3: The order of convergence , and when .


(2−4, 85) 4.659 4.9459
(2−5, 85)

(2−4, 100) 3.5376 7.3742
(2−5, 100)

(2−4, 120) 3.7551 5.8793
(2−5, 120)

(2−5, 130) 4.0756 6.9976
(2−6, 130)

(2−5, 140) 4.3845 4.6938
(2−6, 140)