Parameters Approach Applied on Nonlinear Oscillators

Table 2

The frequencies 𝜔_LP and 𝜔_MLP given by [15], 𝜔^∗_Present and 𝜔^∗∗_Present given by three-parameter and four-parameter approaches, 𝜔_Exact given by (16) as a function of various values of the parameters 𝑛 and 𝐴=1.

𝑛	𝜔LP	𝜔MLP	𝜔^∗Present	𝜔^∗∗Present	𝜔Exact
1	1	1	1	1	1
4/3	0.97013	0.95452	0.83543	0.96326	0.96916
3/2	0.95671	0.93298	0.82546	0.94793	0.95469
5/3	0.94418	0.91212	0.81649	0.93417	0.94081
2	0.92130	0.87214	0.80103	0.91045	0.91468