The Equivalent Linearization Method with a Weighted Averaging for Solving Undamped Nonlinear Oscillators

Table 1

Comparison of the approximate frequencies with the exact frequency, Example 1.

					. error (%)		. error (%)
0.1	0.5	0.1	0.7076	0.7076	0.0000	0.7076	0.0000
0.5	0.1	2	0.6800	0.6892	1.3501	0.6782	0.2647
1	2	0.5	1.5403	1.5411	0.0520	1.5362	0.2662
2	5	2	3.2958	3.3166	0.6313	3.2802	0.4733
5	2	5	9.5818	9.7852	2.1228	9.5917	0.1033
10	1	0.5	6.0722	6.2048	2.0994	6.0828	0.1746
15	0.5	2	17.9866	18.3848	2.2135	18.0139	0.1518
20	5	1	17.0977	17.4642	2.1436	17.1172	0.1141