Table 2: Comparison between the first expression of the first-order approximate solutions given by (48) obtained by OHAM and numerical results for and (error = ).

(48) Error

1 1. 1. 0.
9/5 0.4493290026 0.4493289954
13/5 0.2018965295 0.2018965301
21/5 0.0407622028 0.0407622034
29/5 0.0082297496 0.0082297482
37/5 0.0016615551 0.0016615578
41/5 0.0007465838 0.0007465853
9 0.0003354620 0.0003354620