Table 10: Comparison between the first expression of the first-order approximate solutions given by (53) obtained by OHAM and numerical results for and (error = ).

(53) Error

1 2. 2. 0.
9/5 1.6330858924 1.6330861523
13/5 1.5550512928 1.5550531316
21/5 1.5269871985 1.5269891353
29/5 1.5239948037 1.5239925608
37/5 1.5236020621 1.5236049410
41/5 1.5235615146 1.5235649024
9 1.5235467934 1.5235494172
1.5235393146 1.5235393145