493204.fig.004a
(a)
493204.fig.004b
(b)
493204.fig.004c
(c)
493204.fig.004d
(d)
Figure 4: For (45), (a) graph of the approximate solutions for , , and various values of and , (b) comparison of the estimated error functions for , , and various values of and , (c) graph of the approximate solutions for ,   , , , , , and , and (d) graph of the estimated error functions for , , , and , , , and .