u

0.1

0.2

0.5

[10]

6.5906

3.6728

1.4118

[14]

7.1250

4.4133

2.2430

[11]

7.1480

4.4660

2.3521

[12]

7.1672

4.5175

2.4158

[7]

7.1905

4.5275

2.4473

[15]

7.2611

4.6380

2.5898

定理1 $\left(\beta =0.5\right)$

8.1018

5.4514

2.7180

定理1 $\left(\beta =0.7\right)$

9.5063

6.1771

2.8181