An Effective Solution of the Cube-Root Truly Nonlinear Oscillator: Extended Iteration Procedure

Table 5

Comparison of the approximate frequency-amplitude relations with exact and existing results of .

			Er (%)	Er (%)	Er (%)
0.1	2	1.99875	1.99875; 0.0000	1.99875; 0.0000	1.99875; 0.0000
0.5	4	3.937579	3.937665; 0.0022	3.937583; 0.0001	3.937665; 0.0022
1	1	0.937792	0.938194; 0.0429	0.937853; 0.0065	0.938194; 0.0429
1.5	1	0.860608	0.863202; 0.3013	0.861781; 0.136299	0.863202; 0.3013
2	1	0.7525	0.763763; 1.4968	0.747482; 0.6668	0.763763; 1.4968

Note. Here, represents the approximation frequency obtained by Bayat et al. [13].