t

x

Exact

RPA

RTA

AE [Present]

0.1

1/6

0.135824

0.135824

0.135824

1.26E−9

2/6

0.267884

0.267884

0.267884

1.16E−9

3/6

0.392520

0.392520

0.392520

2.01E−11

4/6

0.506278

0.506278

0.506278

1.25E−10

5/6

0.606005

0.606005

0.606005

1.21E−9

1

0.688938

0.688938

0.688938

1.66E−9