x

S(x)

u(x)

Absolute Error

0.0

1.000000000000

1.000000000000

0.00000000

0.2

0.977122197869

0.977122206528

8.6590E−09

0.4

0.895094735449

0.895094818584

8.3135E−08

0.6

0.728847331127

0.728847520156

1.8903E−07

0.8

0.445108018183

0.445108185698

1.6752E−07

1.0

0.00000000000

0.000000000000

0.00000000