The Semianalytical Solutions for Stiff Systems of Ordinary Differential Equations by Using Variational Iteration Method and Modified Variational Iteration Method with Comparison to Exact Solutions

Table 3

Values for 𝑢(𝑡) for the fifteenth iteration by Variational Iteration Method (VIM) and Modified Variational Iteration Method (MVIM) compared with exact values of 𝑢(𝑡).

𝑡	VIM 𝑢15	MVIM 𝑢15	Exact 𝑢
0	2	2	2
1	0.15310487138764364	0.15310487138763976	0.15310487138763973
2	0.02342881322120863	0.02342881321791905	0.02342881321791905
3	0.0035861247768383723	0.0035861247256523954	0.003586124725652396
4	0.0005489094046572347	0.0005489092132974475	0.0005489092132974475
5	0.00008401900780327056	0.00008401864059355628	0.00008401864059355636