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 2

Absolute error values for 𝑢(𝑡) for the fifteenth iteration by Variational Iteration Method (VIM) and Modified Variational Iteration Method (MVIM).

𝑡	|𝑢(𝑡)−𝑢15(𝑡)|	|𝑢(𝑡)−𝑚𝑢15(𝑡)|
0	0	0
0.1	2.2887169047990097∗10^−16	1.7412077124868676∗10^−17
0.2	1.7246525930471324∗10^−14	1.0492619227905604∗10^−16
0.3	5.12282328102992∗10^−12	1.1491517324386781∗10^−17
0.4	2.4063157065892793∗10^−10	7.613359770026226∗10^−17
0.5	4.215205883992268∗10^−9	5.942063179931005∗10^−17
0.6	4.0118521299307985∗10^−8	2.1285853261205842∗10^−16
0.7	2.531821182757271∗10^−7	9.624496566471713∗10^−17
0.8	1.1917093621013897∗10^−6	5.238729372178397∗10^−17
0.9	4.508957424324139∗10^−6	1.0421893383016911∗10^−17
1	0.000014421700653924341	2.388226335442445∗10^−16