η

$f$

$f^{\left(\text{1}\right)}$

Howarth

this work

Howarth

this work

0.4

0.02656

0.02656

0.13277

0.13278

0.8

0.10611

0.10611

0.26471

0.26470

1.2

0.23795

0.23796

0.39378

0.39377

1.6

0.42032

0.42037

0.51676

0.51676

2.0

0.65003

0.65012

0.62977

0.62977

2.4

0.92230

0.92245

0.72899

0.72898

2.8

1.23099

1.23121

0.81152

0.81149

3.2

1.56911

1.56939

0.87609

0.87604

3.6

1.92954

1.92986

0.92333

0.92326

4.0

2.30576

2.30611

0.95552

0.95543

4.4

2.69238

2.69273

0.97587

0.97577

4.8

3.08534

3.08567

0.98779

0.98770

5.2

3.48189

3.48221

0.99425

0.99417

5.6

3.88031

3.88061

0.99838

0.99742

6.0

4.27964

4.27993

0.99898

0.99894

6.4

4.67938

4.67964

0.99961

0.99961

6.8

5.07928

5.07951

0.99987

0.99993

7.2

5.47925

5.47940

0.99996

1.00021

7.6

5.87924

5.87918

0.99999

1.00086

8.0

6.27923

6.27846

1.00000

1.00314