713798.fig.002a
(a)
713798.fig.002b
(b)
713798.fig.002c
(c)
Figure 2: Plot comparing the for , and 1000, respectively, where we have chosen , , , and . We have used (3.18) as the initial value of the numerical schemes where LE scheme corresponds to the Lawson-Euler scheme (3.8), BDF scheme corresponds to the numerical scheme (3.11), and RK4 scheme corresponds to the numerical scheme (3.12).