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

Table 5

Comparison of the approximate frequencies, Example 5.

	[23]	[34]	. error (%)		. error (%)
0	1.00000	1.000000	0.00000	1.000000	0.00000
1			2.03313		10.10847
2			3.62649		8.680304
3			4.69039		7.72281
4			5.45295		7.037311
5			6.03179		6.517881
6			6.48627		6.110074
7			6.85704		5.779148
8			7.16298		5.504079
9			7.42243		5.272273
10			7.64509		5.07269
50			9.93668		3.028171
500			10.8938		2.17776
			11.07200		2.02100