N

$FGM{C}_{1-1-3}$

收敛阶

$FGM{C}_{1-2-2}$

收敛阶

$FGM{C}_{2-2-2}$

收敛阶

N = 8

2.37e−02

7.41e−03

1.88e−03

N = 12

1.86e−03

6.27

5.86e−04

6.26

1.11e−04

6.97

N = 16

2.86e−04

6.50

9.13e−05

6.46

1.36e−05

7.31

N = 20

6.52e−05

6.63

2.10e−05

6.58

2.57e−06

7.47

N = 24

1.92e−05

6.70

6.25e−06

6.65

6.47e−07

7.57

N = 28

6.79e−06

6.75

2.22e−06

6.71

1.99e−07

7.63

N = 32

2.74e−06

6.79

9.04e−07

6.74

7.09e−08

7.75

N = 36

1.23e−06

6.82

4.07e−07

6.78

2.79e−08

7.92

收敛阶

7.00

7.00

8.00