h = k (步长)

Max err1 (交错五点)

rate1 (交错五点)

Maxerr2 (九点)

rate2 (九点)

Maxerr3 (五点)

1/4

0.0106

-

0.0116

-

0.0391

1/8

0.0039

1.4283

0.0044

1.3985

0.0431

1/16

0.0012

1.7004

0.0014

1.6521

0.0397

1/32

3.4069e−04

1.8165

4.0856e−04

1.7751

0.0444

1/64

9.2356e−05

1.8832

1.1128e−04

1.8765

0.0444